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                    STANDARD INDUSTRIAL LEASE - FULL NET



                                   between

           THE EQUITABLE LIFE ASSURANCE SOCIETY OF THE UNITED STATES

                                 as Landlord



                                     and

                           PHOENIX TECHNOLOGIES LTD.

                                  as Tenant


                                     -4-

<PAGE>


                               TABLE OF CONTENTS

                                                             PAGE
                                                             ----

1.       Lease of Premises . . . . . . . . . . . . . . . . . . 1

2.       Term. . . . . . . . . . . . . . . . . . . . . . . . . 2

3.       Definitions . . . . . . . . . . . . . . . . . . . . . 2

4.       Tenant Improvements/Early Entry . . . . . . . . . . . 4
         A.      Construction of Tenant Improvements . . . . . 4
         B.      Early Entry . . . . . . . . . . . . . . . . . 5

5.       Rent. . . . . . . . . . . . . . . . . . . . . . . . . 5
         A.      Basic Rent. . . . . . . . . . . . . . . . . . 5
         B.      Additional Rent . . . . . . . . . . . . . . . 6
         C.      Late Charge . . . . . . . . . . . . . . . . . 6
         D.      Prepaid Rent. . . . . . . . . . . . . . . . . 6
         E.      Payment of Rent . . . . . . . . . . . . . . . 6
         F.      Security Deposit. . . . . . . . . . . . . . . 6

6.       [Intentionally omitted] . . . . . . . . . . . . . . . 7

7.       Use . . . . . . . . . . . . . . . . . . . . . . . . . 7
         A.      Permitted Use . . . . . . . . . . . . . . . . 7
         B.      Prohibited Uses . . . . . . . . . . . . . . . 7
         C.      Insurance Requirements. . . . . . . . . . . . 8
         D.      Common Areas. . . . . . . . . . . . . . . . . 8
         E.      Rules and Regulations . . . . . . . . . . . . 8
         F.      Parking . . . . . . . . . . . . . . . . . . . 8

8.       Quiet Enjoyment . . . . . . . . . . . . . . . . . . . 9

9.       Taxes . . . . . . . . . . . . . . . . . . . . . . . .10
         A.      Real Property Taxes Defined . . . . . . . . .10
         B.      Tenant's Obligation to Reimburse. . . . . . .11
         C.      Taxes on Tenant's Property. . . . . . . . . .11

10.      Utilities . . . . . . . . . . . . . . . . . . . . . .11

                                     -i-

<PAGE>

                               TABLE OF CONTENTS
                                  (CONTINUED)
                                                             PAGE
                                                             ----

11.      Insurance . . . . . . . . . . . . . . . . . . . . . .11
         A.      Tenant's Insurance. . . . . . . . . . . . . .11
         B.      Landlord's Insurance. . . . . . . . . . . . .13
         C.      Tenant's Obligation to Reimburse. . . . . . .13
         D.      Release and Waiver of Subrogation . . . . . .14

12.      Landlord's Right to Perform Tenant's Covenants. . . .14

13.      Maintenance and Repair. . . . . . . . . . . . . . . .15
         A.      Condition on Delivery . . . . . . . . . . . .15
         B.      Tenant's Obligations. . . . . . . . . . . . .15
         C.      Landlord's Obligation to Maintain . . . . . .17
         D.      Tenant's Early Occupancy Date or the 
                  Obligation to Reimburse. . . . . . . . . . .18
         E.      Common Operating Expenses Defined . . . . . .19
         F.      Audit . . . . . . . . . . . . . . . . . . . .20
         G.      Control of Common Areas . . . . . . . . . . .21

14.      Surrender of Premises . . . . . . . . . . . . . . . .21

15.      Compliance With Laws. . . . . . . . . . . . . . . . .22
         A.      Landlord's Obligations. . . . . . . . . . . .22
         B.      Tenant's Obligations. . . . . . . . . . . . .23

16.      Hazardous Materials . . . . . . . . . . . . . . . . .23
         A.      Tenant's Obligations. . . . . . . . . . . . .23
         B.      Tenant's Indemnity. . . . . . . . . . . . . .24
         C.      Notices . . . . . . . . . . . . . . . . . . .24
         D.      Testing . . . . . . . . . . . . . . . . . . .24
         E.      Survival. . . . . . . . . . . . . . . . . . .24

17.      Alterations . . . . . . . . . . . . . . . . . . . . .25
         A.      Consent Required. . . . . . . . . . . . . . .25
         B.      Conditions. . . . . . . . . . . . . . . . . .26
         C.      Property of Tenant. . . . . . . . . . . . . .26

                                     -ii-

<PAGE>

                               TABLE OF CONTENTS
                                  (CONTINUED)
                                                             PAGE
                                                             ----

18.      Damage or Destruction . . . . . . . . . . . . . . . .26
         A.      Landlord's Duty to Restore. . . . . . . . . .26
         B.      Landlord's Right to Terminate . . . . . . . .27
         C.      Tenant's Right to Terminate . . . . . . . . .28
         D.      Payment of Deductibles. . . . . . . . . . . .29
         E.      Abatement of Rent . . . . . . . . . . . . . .29
         F.      Waiver. . . . . . . . . . . . . . . . . . . .29

19.      Condemnation. . . . . . . . . . . . . . . . . . . . .30
         A.      Tenant's Right of Termination . . . . . . . .30
         B.      Condemnation Award. . . . . . . . . . . . . .30
         C.      Restoration . . . . . . . . . . . . . . . . .30

20.      Mechanic's Liens. . . . . . . . . . . . . . . . . . .30

21.      Financial Statements. . . . . . . . . . . . . . . . .31

22.      Landlord's Entry. . . . . . . . . . . . . . . . . . .31

23.      Assignment and Subletting . . . . . . . . . . . . . .31

24.      Subordination . . . . . . . . . . . . . . . . . . . .34

25.      Attornment. . . . . . . . . . . . . . . . . . . . . .34

26.      Indemnification . . . . . . . . . . . . . . . . . . .35

27.      Attorneys' Fees . . . . . . . . . . . . . . . . . . .35

28.      No Representations. . . . . . . . . . . . . . . . . .35

29.      Default . . . . . . . . . . . . . . . . . . . . . . .35
         A.      Events of Default . . . . . . . . . . . . . .35
         B.      Landlord's Remedies . . . . . . . . . . . . .36
         C.      Cumulative Remedies . . . . . . . . . . . . .37
         D.      No Waivers. . . . . . . . . . . . . . . . . .37
         E.      Application of Tenant Deposits. . . . . . . .37

                                     -iii-

<PAGE>


                               TABLE OF CONTENTS
                                  (CONTINUED)
                                                             PAGE
                                                             ----
         F.      Landlord's Default. . . . . . . . . . . . . .37

30.      Holding Over. . . . . . . . . . . . . . . . . . . . .38

31.      Notices . . . . . . . . . . . . . . . . . . . . . . .38

32.      Limitation of Landlord's Liability. . . . . . . . . .38
         A.      Upon Sale or Transfer . . . . . . . . . . . .38
         B.      Limitation of Recourse. . . . . . . . . . . .39

33.      Estoppel Certificates . . . . . . . . . . . . . . . .39

34.      Brokerage . . . . . . . . . . . . . . . . . . . . . .39

35.      Signage . . . . . . . . . . . . . . . . . . . . . . .40

36.      Option to Extend. . . . . . . . . . . . . . . . . . .40

37.      [Intentionally Omitted.]  . . . . . . . . . . . . . .41

38.      Miscellaneous . . . . . . . . . . . . . . . . . . . .41


                                      -iv-

<PAGE>

                               TABLE OF CONTENTS
                                  (CONTINUED)
                                                             PAGE
                                                             ----

SCHEDULE OF EXHIBITS

Exhibit A        -        Map of Parcel E

Exhibit A-1      -        Legal Description of Project

Exhibit A-2               Diagram of Reduced Premises Area

Exhibit B        -        Site Plan

Exhibit C        -        Improvement Agreement

Exhibit D        -        Form of Acceptance Agreement

Exhibit E        -        Hazardous Materials Questionnaire

Exhibit F                 Parcel E Environmental Reports


                                   -v-


<PAGE>


                    STANDARD INDUSTRIAL LEASE - FULL NET




         THIS LEASE, dated as of May 15, 1996, for reference purposes only, 
is made by and between THE EQUITABLE LIFE ASSURANCE SOCIETY OF THE UNITED 
STATES, a New York corporation ("Landlord"), and PHOENIX TECHNOLOGIES LTD., a 
Delaware corporation ("Tenant"), upon the following terms and conditions.

         1.      LEASE OF PREMISES.  Landlord hereby leases to Tenant, and 
Tenant hereby leases from Landlord, for the Lease Term and upon the terms and 
conditions hereinafter set forth, that certain building structure commonly 
known as 411 East Plumeria Drive, Building "E" of the Montague Industrial 
Park, San Jose, California, as shown on EXHIBIT "A" attached hereto, 
containing approximately 86,602 square feet of Gross Leasable Area 
(interchangeably referred to herein as the "Premises" or "Building"), 
together with (i) the exclusive right to use no more than the number of 
Tenant's Allocated Parking Stalls (subject to the terms and conditions set 
forth in subparagraph 7(F), below), and (ii) the non-exclusive right to use 
the Common Areas for vehicular and pedestrian ingress to and egress from the 
Premises.  Notwithstanding the foregoing to the contrary, during that period 
of time commencing on the Commencement Date and continuing thereafter until 
the first anniversary thereof (which period of time shall be referred to 
herein as the "First Lease Year"), Tenant shall have the right to occupy only 
that approximately fifty-five thousand (55,000) square feet of the Premises 
as shown on EXHIBIT "A-2" attached hereto (which area shall be referred to 
herein as the "Reduced Premises Area") together with the use of the parking 
areas and Common Areas described in clauses (i) and (ii) above of this 
Paragraph 1.  During the First Lease Year, Landlord shall have the right to 
lease all or any portion of the Reduced Premises Area so long as the term of 
any such lease expires on or before the expiration of the First Lease Year.  
If Landlord does not elect to lease the Reduced Premises Area, Tenant shall 
be responsible for all of the obligations and liabilities under this as they 
relate to the entire Premises including, without limitation, the following: 
(i) the obligation to pay Common Operating Expenses, insurance and Real 
Property Taxes as they relate to the entire Premises, (ii) the obligation to 
keep in good order condition and repair the entire Premises, (iii) the 
obligation to maintain insurance covering the entire Premises, and (iv) 
indemnifications obligations with respect to the entire Premises.  If 
Landlord elects to lease all or a portion of the Reduced Premises Area, then, 
with respect to those obligations and liabilities that vary with the size of 
the Premises including, without limitation, the obligations and liabilities 
set forth in clauses (i) through (iv) above, Tenant shall only be responsible 
for such obligations and liabilities to the extent that they are fairly 
allocable to the Premises and to this end, Landlord and Tenant shall execute 
an amendment to this Lease to implement the intent of the parties.  During 
the First Lease Year, Landlord shall have the right, without Tenant's 
consent, to enter and use the Reduced Premises Area at any time and for any 
purpose. Tenant's lease of the Premises and use of the Common Areas shall be 
subject to any and all existing encumbrances, easements, conditions, 
covenants, and restrictions ("CC&R's"), and rights-of-way now recorded as an 
interest affecting the Project, and such other matters as may be disclosed by 
inspection or survey.

<PAGE>

         2.      TERM.  The term of this Lease shall commence on the 
Commencement Date (as hereinafter defined) and terminate on the last day of 
the eighty-fourth (84th) full calendar month following the Commencement Date 
(the "Expiration Date"), unless sooner terminated pursuant to the provisions 
hereof.

         3.      DEFINITIONS.  As used herein, the following terms shall have 
the following meanings:

                 A.       The term "Agent" shall mean, with respect to either 
Landlord or Tenant, its respective agents, employees, contractors (and their 
subcontractors) and invitees (and the employees of such contractors, 
subcontractors and invitees).  In the case of Tenant, the term "Agent" shall 
also mean and include its subtenants and the Agents of such subtenants.  In 
the case of Landlord, the term "Agent" shall not mean nor include the tenants 
(and their subtenants) of other buildings within the Project or other 
properties in the vicinity of the Project owned by Landlord.

                 B.       The term "Alterations" shall mean all improvements, 
additions, alterations and fixtures installed in the Premises by Tenant at 
its expense which are not Trade Fixtures.

                 C.       The term "Building Areas" shall mean those areas of 
the Project on which buildings are constructed from time to time, intended 
for the exclusive use of the occupants thereof (excluding any outside areas 
such as the parking lot and driveways), which areas as now configured are so 
labeled and shown on the attached Site Plan.  It is expressly understood that 
Landlord shall have the right at any time, and from time to time, to change 
or reconfigure the Building Areas (except for the Premises), and to add 
additional buildings to or delete buildings from the Project.

                 D.       The term "Commencement Date" shall mean the later 
of (i) November 1, 1996 and (ii) that date by which all of the following have 
occurred:  (a) Landlord has substantially completed the Tenant Improvements 
in accordance with subparagraph 2.C of the Improvement Agreement; and (b) 
Landlord has delivered possession of the Premises to Tenant.  The 
Commencement Date shall be advanced one (1) day for each day of delay in 
construction or completion of the Tenant Improvements caused by "Tenant 
Delay", as provided in paragraph 7 of the Improvement Agreement.  Landlord 
shall use reasonable efforts to notify Tenant of Landlord's estimation of the 
earliest date on which the Commencement Date will occur at least fifteen (15) 
days prior to such estimated date. Landlord's estimation shall be based upon 
information available to Landlord at the time in question.

                 E.       The term "Common Areas" shall mean all areas of the 
Project other than Building Areas, including parking areas, access road and 
driveways, landscaped areas, loading areas, pedestrian sidewalks and plazas, 
which Common Areas are shown on the attached Site Plan.  It is understood 
that Landlord shall have the right at any time, and from time to time, to add 
property to or remove property from the Common Areas, or to reconfigure same, 
provided that (i) there is at all times parking available within the Project 
satisfying the requirements of applicable Law, (ii) any such

                                     -2-

<PAGE>

changes do not materially interfere with access to the Premises and (iii) any 
such changes do not reduce the number of parking spaces granted to Tenant 
under subparagraph 7(F) of this Lease.

                 F.       The term "Default Interest Rate" shall mean an 
annual rate equal to four percent (4%) over the annual prime rate of interest 
announced publicly by Citibank, N.A. in New York, New York from time to time 
or the maximum interest rate permitted by any applicable usury law, whichever 
is less.

                 G.       The term "Effective Date" shall mean the date this 
Lease is executed by the last signatory hereto whose execution of this Lease 
is required to make it legally binding on both Landlord and Tenant.

                 H.       The term "Gross Leasable Area" shall mean the area 
within the Building, and each building located on the Project, measured from 
the exterior faces of exterior walls, including the inset area at each 
entryway and the inset area for glazing, but excluding truck dock areas, roof 
overhangs, atriums, courtyards and outside decks.

                 I.       The term "Hazardous Materials" shall mean any 
substances, materials, and wastes that are or become regulated as hazardous 
or toxic substances under any applicable local, state or federal law, 
regulation or order.

                 J.       The term "Law" shall mean any judicial decision, 
statute, constitution, ordinance, resolution, regulation, rule, 
administrative order, or other requirement of any municipal, county, state, 
federal or other governmental agency or authority having jurisdiction over 
the parties to this Lease or the Premises.

                 K.       The term "Lease Term" shall mean the term of this 
Lease as described in paragraph 2 hereof and, upon exercise of an option to 
extend, as provided in paragraph 36 hereof, shall include the Option Term 
resulting from such exercise.

                 L.       The term "Lender" shall mean the holder of any 
mortgage or deed of trust encumbering, or ground leasehold interest in, the 
Premises.

                 M.       The term "Parcel E" shall mean that certain real 
property upon which the Premises is located and shown as Parcel "E" on 
EXHIBIT "A" attached hereto.

                 N.       The term "Premises Gross Leasable Area" shall mean 
the Gross Leasable Area of the Building.  For purposes of this Lease, the 
Gross Leasable Area of the Building as now configured shall be deemed to be 
86,602 square feet.  Even if the Gross Leasable Area of the Building is 
actually determined to be otherwise, Landlord and Tenant agree that Basic 
Rent, Additional Rent and Tenant's Prorata Share shall be as provided in this 
Lease and shall not be adjusted.


                                     -3-

<PAGE>

                 O.       The term "Project" shall mean all of the property 
shown on the attached Site Plan, and all buildings and other improvements 
located thereon from time to time, commonly known as Montague Industrial 
Park, and more particularly described in attached EXHIBIT "A-1".

                 P.       The term "Project Gross Leasable Area" shall mean 
the total aggregate Gross Leasable Area of all buildings constructed from 
time to time within the Project.  It is acknowledged and agreed that the 
current Gross Leasable Area of all buildings now constructed within the 
Project is approximately 417,532 square feet.  If Landlord at any time 
hereafter changes the composition of the Project by removing or adding 
buildings thereto, the "Project Gross Leasable Area" shall be appropriately 
adjusted.  Landlord represents and warrants that the method of measurement of 
the Project Gross Leasable Area is the same as the method of measurement of 
the Premises Gross Leasable Area.

                 Q.       The term "Site Plan" shall mean that certain Site 
Plan attached hereto as EXHIBIT "B", showing the Premises and depicting the 
existing location and configuration of all Building Areas and the Common 
Areas of the Project.

                 R.       The term "Tenant Improvements" shall mean those 
improvements to be constructed by Landlord as provided in the Improvement 
Agreement, EXHIBIT "C" hereto.

                 S.       The term "Tenant's Allocated Parking Stalls" shall 
mean Three Hundred Twenty-Nine (329) parking stalls contained within Parcel E 
for the use of Tenant, its employees and invitees, as provided in 
subparagraph 7(F), below.

                 T.       The term "Tenant's Prorata Share" shall mean twenty 
and seventy-four one-hundredths percent (20.74%).

                 U.       The term "Trade Fixtures" shall mean anything 
installed in or affixed to the Premises by Tenant at its expense for purposes 
of trade, manufacture, ornament or use (except replacement of similar work or 
material originally installed by Landlord) which can be removed without 
injury to the Premises (E.G., demountable partitions, business and production 
equipment and systems, furniture and furnishings) unless such thing has, by 
the manner in which it is affixed, become an integral part of the Premises.

         4.      TENANT IMPROVEMENTS/EARLY ENTRY.

                 A.       CONSTRUCTION OF TENANT IMPROVEMENTS.  Landlord 
shall construct or cause to be constructed the Tenant Improvements pursuant 
to the Improvement Agreement attached hereto as EXHIBIT "C", and shall cause 
such work to be completed as soon after the Effective Date as reasonably 
practicable.

                                     -4-

<PAGE>

                 B.       EARLY ENTRY.  If, before November 1, 1996, the 
Tenant Improvements are substantially completed and Tenant has obtained all 
governmental approvals and permits required for the legal occupancy of the 
Premises for Tenant's intended use, then Tenant shall have the right to 
occupy the Premises at such time that the foregoing events have occurred (the 
"Early Occupancy Date").  If Tenant elects to take early occupancy of the 
Premises, then during the period commencing on the Early Occupancy Date and 
continuing until the Commencement Date, any entry by Tenant onto the Premises 
shall be subject to all of the terms and conditions of this Lease other than 
payment of Basic Rent. 

         5.      RENT.  Tenant shall pay rent during the Lease Term in 
accordance with the terms of this paragraph 5, as follows:

                 A.       BASIC RENT.  During the Lease Term, Tenant shall 
pay a fixed monthly net rental (the "Basic Rent") in accordance with the 
following:

                          (1)     Basic Rent for the period commencing on the 
Commencement Date and continuing until the first (1st) day of the thirteenth 
(13th) month of the Lease Term shall be Fifty-Seven Thousand Seven Hundred 
Fifty Dollars ($57,750.00).

                          (2)     Basic Rent for the period commencing on the 
first day of the thirteenth (13th) full calendar month of the Lease Term and 
continuing until the first (1st) day of the twenty-fifth (25th) full calendar 
month of the Lease Term shall be Ninety-Nine Thousand Five Hundred Ninety-Two 
Dollars ($99,592.00).
                          
                          (3)     Basic Rent for the period commencing on the 
first (1st) day of the twenty-fifth (25th) full calendar month of the Lease 
Term and continuing until the first (1st) day of the thirty-seventh (37th) 
full calendar month of the Lease Term shall be One Hundred Three Thousand 
Nine Hundred Twenty-Two Dollars ($103,922.00).

                          (4)     Basic Rent for the period commencing on the 
first (1st) day of the thirty-seventh (37th) full calendar month of the Lease 
Term and continuing until the first (1st) day of the forty-ninth (49th) full 
calendar month of the Lease Term shall be One Hundred Eight Thousand Two 
Hundred Fifty-Two Dollars ($108,252.00).

                          (5)     Basic Rent for the period commencing on the 
first (1st) day of the forty-ninth (49th) full calendar month of the Lease 
Term and continuing until the first (1st) day of the sixty-first(61st) full 
calendar month of the Lease Term shall be One Hundred Twelve Thousand Five 
Hundred Eighty-Two Dollars ($112,582.00).

                          (6)     Basic Rent for the period commencing on the 
first (1st) day of the sixty-first (61st) full calendar month of the Lease 
Term and continuing until the first (1st) day of the

                                     -5-

<PAGE>

seventy-third (73rd) full calendar month of the Lease Term shall be One 
Hundred Sixteen Thousand Nine Hundred Twelve Dollars ($116,912.00).

                          (7)     Basic Rent for the period commencing on the 
first (1st) day of the seventy-third (73rd) full calendar month of the Lease 
Term and continuing until the Expiration Date shall be One Hundred Twenty-One 
Thousand Two Hundred Forty-Two Dollars ($121,242.00).

                 B.       ADDITIONAL RENT.  Commencing on the Commencement 
Date and continuing throughout the Lease Term, Tenant shall be obligated to 
pay Real Property Taxes (as provided in paragraph 9 hereof), insurance 
premiums (as provided in paragraph 11 hereof), and all other sums required to 
be paid by Tenant under this Lease. All Real Property Taxes, insurance 
premiums, late charges, costs and expenses which Tenant is required to pay 
hereunder, together with all interest and penalties that may accrue thereon 
in the event of Tenant's failure to pay such amounts, shall be deemed to be 
additional rent ("Additional Rent"), and shall be paid in addition to the 
Basic Rent.  In the event of Tenant's nonpayment of Additional Rent, Landlord 
shall have all of the rights and remedies with respect thereto as Landlord 
has for the nonpayment of Basic Rent.

                 C.       LATE CHARGE.  If any installment of rent or any 
other sum due from Tenant shall not be received by Landlord when due, and if 
such amount remains unpaid at the end of ten (10) business days after such 
sum is due, Tenant shall pay to Landlord a late charge equal to five percent 
(5%) of such overdue amount.  The parties hereby agree that such late charge 
represents a fair and reasonable estimate of the costs Landlord will incur by 
reason of late payment by Tenant based upon the circumstances existing as of 
the date of this Lease.

                 D.       PREPAID RENT.  On or before the Effective Date, 
Tenant shall pay to Landlord Fifty-Seven Thousand Seven Hundred Fifty Dollars 
($57,750) as prepayment of Basic Rent for credit against the first 
install-ment of Basic Rent due pursuant to this Lease.

                 E.       PAYMENT OF RENT.  All rent required to be paid in 
monthly installments pursuant to this Lease shall be paid in advance on the 
first day of each calendar month during the Lease Term.  All rent shall be 
paid in lawful money of the United States, without any abatement, deduction 
or offset whatsoever (except as otherwise specifically provided in this 
Lease), and without any prior demand therefor.  Rent shall be paid to 
Landlord at such place or address as Landlord may designate in writing from 
time to time.  Tenant's obligation to pay Basic Rent and Additional Rent 
shall be prorated at the commencement and expiration of the Lease Term.

                 F.       SECURITY DEPOSIT.  On or before the Effective Date, 
Tenant shall deposit with Landlord in cash Ninety-Nine Thousand Five Hundred 
Ninety-Two Dollars ($99,592) which amount shall be held by Landlord as 
security for the performance by Tenant of its obligations under this Lease 
and not as prepayment of rent (the "Security Deposit").  Landlord may from 
time to time apply or draw upon such Security Deposit as is reasonably 
necessary for the following purposes:  (i) to remedy

                                     -6-


<PAGE>

any default by Tenant in the payment of rent; (ii) to repair damages to the 
Premises caused by Tenant; (iii) to clean the Premises upon termination of 
the Lease; and (iv) to remedy any other default of Tenant under this Lease to 
the extent permitted by Law, and, in this regard, Tenant hereby waives any 
restriction on the uses to which the Security Deposit may be put contained in 
California Civil Code Section 1950.7.  In the event the Security Deposit or 
any portion thereof is so used or drawn upon, Tenant agrees to pay to 
Landlord promptly upon demand an amount in cash in an amount sufficient to 
restore the Security Deposit to the full original amount.  Landlord shall not 
be deemed a trustee of the Security Deposit, may use the Security Deposit in 
its business, and shall not be required to segregate it from its general 
accounts.  Tenant shall not be entitled to any interest on the Security 
Deposit.  If Landlord transfers the Premises during the Lease Term, Landlord 
may transfer any Security Deposit to any transferee of Landlord's interest in 
conformity with provisions of California Civil Code Section 1950.7 and any 
successor statute, in which event Landlord will be released from all 
liability for the return of any such cash Security Deposit.

         6.      [Intentionally omitted]

         7.      USE.

                 A.       PERMITTED USE.  The Premises may be used and 
occupied only for general administrative offices, testing, research and 
development, manufacturing and storage of computer technology, related 
marketing and sales activity, and any other related use conforming to Law and 
all existing recorded covenants, conditions, and restrictions affecting the 
Premises which related use has been approved by Landlord.

                 B.       PROHIBITED USES.  Tenant shall not do or permit 
anything to be done in or about the Premises or Common Areas which will 
interfere with the rights of other occupants of the Project, cause damage to 
the structure, roof or other parts of the Premises.  Tenant shall not operate 
any equipment within the Premises which will (i) injure, vibrate or shake the 
Premises, (ii) overload existing electrical systems or other mechanical 
equipment servicing the Premises, or (iii) impair the efficient operation of 
the fire sprinkler system or the heating, ventilating or air conditioning 
("HVAC") equipment servicing the Premises, or (iv) damage, overload or 
corrode the sanitary sewer system.  Tenant shall not attach, hang or suspend 
anything from the ceiling, roof, walls or columns of the Premises or set any 
load on the floor in excess of approved structural limits as defined by 
Landlord's architect.  Any dust, fumes, or waste products generated by 
Tenant's use of the Premises shall be contained and disposed of in a manner 
that does not create a fire or health hazard, damage the Premises, or 
interfere with the businesses of other occupants of the Project.  All noise 
or odors generated by Tenant shall be contained or muffled so that they do 
not interfere with the businesses of other occupants of the Project.  Tenant 
shall not commit nor permit to be committed any waste in or about the 
Premises, and Tenant shall not create or permit at the Premises any 
objectionable noises, odors, dust or nuisances which may disturb the quiet 
enjoyment of other occupants of the Project.


                                     -7-

<PAGE>

                 C.       INSURANCE REQUIREMENTS.  Tenant shall not use or 
permit Tenant's Agents to use the Premises or Common Areas in any manner 
which will cause a cancellation of any insurance policy covering the 
Premises.  Tenant shall not sell, or permit to be kept, used, or sold in or 
about the Premises any article which may be prohibited by Lessor's standard 
form of fire and property damage insurance policy.  Tenant shall comply with 
all reasonable requirements of any insurance company, insurance underwriter, 
or Board of Fire Underwriters which directly relate to use of the Premises 
and which are necessary to maintain, at reasonable rates, the insurance 
coverage carried by Landlord pursuant to this Lease.  

                 D.       COMMON AREAS.  No materials, supplies, storage 
tanks or containers, equipment, finished products or semi-finished products, 
raw materials, inoperable vehicles or articles of any nature shall be stored 
upon or permitted to remain outside of the Premises, except in enclosed areas 
specifically designed for exterior storage designated or otherwise approved 
by Landlord for such use.  All entrances to such outside trash enclosures, if 
any, shall be kept closed, and waste shall be stored in such manner as not to 
be visible from the exterior of such outside enclosures.

                 E.       RULES AND REGULATIONS.  Landlord may from time to 
time promulgate reasonable rules and regulations applicable to all occupants 
of the Project for the care and orderly management of the Project and the 
safety of its tenants and invitees, provided (i) the Common Operating 
Expenses and other costs payable by Tenant hereunder are not thereby 
materially increased, (ii) such rules and regulations do not materially 
increase the obligations or decrease the rights of Tenant under this Lease, 
and (iii) such rules and regulations are nondiscriminatory among the 
occupants of the Project.  Such rules and regulations shall be binding upon 
Tenant upon delivery of a copy thereof to Tenant, and Tenant agrees to abide 
by such rules and regulations.  If there is a conflict between the rules and 
regulations and any of the provisions of this Lease, the provisions of this 
Lease shall prevail.  Landlord shall not be responsible for the violation of 
such rules and regulations by any other occupants of the Project, but 
Landlord shall use commercially reasonable efforts to enforce compliance with 
such rules and regulations by all occupants of the Project.

                 F.       PARKING.  Tenant is hereby allocated, and shall 
with its Agents have the exclusive right to use, without charge in addition 
to the Basic Rent, no more than the number of Tenant's Allocated Parking 
Stalls within that portion of the Common Areas of the Project hereinafter 
designated, subject to the following terms and conditions:

                          (1)     Tenant and its Agents shall be permitted to 
park only within those parking spaces located on Parcel E shown cross-hatched 
on EXHIBIT "A" attached hereto.

                          (2)     Landlord shall have no obligation to police 
or otherwise enforce Tenant's exclusive parking rights hereunder against any 
other occupants or users of the Project, but shall, upon written request by 
Tenant, notify other occupants of the Project of Tenant's exclusive

                                     -8-

<PAGE>

parking rights and request that such other occupants, their employees and 
invitees, park in those portions of the Common Areas not designated for 
Tenant's exclusive use.

                          (3)     Tenant shall not at any time use or permit 
its employees or invitees to use more parking spaces within the Common Areas 
than the number of Tenant's Allocated Parking Stalls or to park or permit the 
parking of its vehicles or the vehicles of others in any portion of the 
Project not designated by Landlord as Tenant's parking area.

                          (4)     Tenant shall furnish Landlord, within ten 
(10) business days after written request from Landlord, with a list of its 
employees' vehicle license numbers and Tenant shall thereafter notify 
Landlord of any change in such list within five (5) days after each such 
change occurs.  Tenant shall have the right, at Tenant's option, to provide 
its employees with stickers or other identification markers or tags to be 
placed in or on the employees' automobiles or other vehicles, evidencing the 
right of such employees to use the parking areas.  Such stickers shall be 
subject to prior review and approval by Landlord.  Tenant shall furnish to 
Landlord a list of identifying numbers for the stickers distributed from time 
to time by Tenant to its employees. If Tenant elects to use such stickers as 
provided herein, Tenant shall not be obligated to furnish Landlord with a 
list of vehicle license numbers for its employees, for as long as Tenant 
maintains in effect such sticker system of identification.  Landlord reserves 
the right to have any vehicles owned by Tenant or its Agents utilizing 
parking spaces in excess of Tenant's Allocated Parking Stalls, to be towed 
away at Tenant's cost.

                          (5)     All trucks and delivery vehicles shall be 
(i) parked only within those specific areas designated as loading zones, and 
(ii) loaded and unloaded in a manner which does not unreasonably interfere 
with the businesses of other occupants of the Project.  Landlord has advised 
Tenant that the parking areas, driveways and sidewalks within the Common Area 
have been improved with two different strengths of paving, one of which is 
designated for heavy truck traffic, the location of which pavement is shown 
as the "Truck Circulation Area" on EXHIBIT "B" attached hereto.  Tenant shall 
cause all trucks brought onto the Project by Tenant, its agents, employees, 
contractors and invitees to be operated and parked only within such Truck 
Circulation Area to minimize damage to the other paved areas of the Common 
Area.

                          (6)     In the event Landlord is required by any 
Law to limit or control parking on the Property, whether by validation of 
parking tickets or any other method of assessment, Tenant agrees to 
participate in such validation or assessment program under such reasonable 
rules and regulations as are from time to time established by Landlord.

         8.      QUIET ENJOYMENT.  Provided Tenant performs its obligations 
hereunder, Tenant may lawfully and quietly occupy the Premises during the 
Lease Term without hindrance or molestation by Landlord, subject, however, to 
the matters herein set forth, and neither Landlord, nor any party claiming 
under or through Landlord, shall disturb Tenant's use or occupancy of the 
Premises.

                                       -9-

<PAGE>

         9.      TAXES.

                 A.       REAL PROPERTY TAXES DEFINED.

                          (1)     INCLUDED IN DEFINITION.  The term "Real 
Property Taxes" as used herein shall mean (i) all taxes, assessments, levies, 
and other charges of any kind or nature whatsoever, general and special, 
foreseen and unforseen (including all installments of principal and interest 
required to pay any existing or future general or special assessments for 
public improvements, services or benefits, and any increases resulting from 
reassessments or resulting from a change in ownership or any other cause), 
now or hereafter imposed by any governmental or quasi-governmental authority 
or special district having the direct or indirect power to tax or levy 
assessments, which are levied or assessed against, or with respect to the 
value, occupancy or use of, all or any portion of Parcel E (as now 
constructed or as may at any time hereafter be constructed, altered, or 
otherwise changed) or Landlord's interest therein, the fixtures, equipment 
and other property of Landlord, real or personal, that are an integral part 
of and located on Parcel E, the gross receipts, income or rentals from Parcel 
E, or the use of parking areas, public utilities, or energy within Parcel E; 
(ii) all charges, levies or fees imposed by reason of environmental 
regulation or other governmental control of Parcel E (but not including any 
tax on Hazardous Materials which is expressly excluded from the definition of 
Real Property Taxes under the provisions of subparagraph 9(A)(2)(vii), 
below); and (iii) all costs and fees (including reasonable attorneys' fees) 
incurred by Landlord in contesting any Real Property Tax and in negotiating 
with public authorities as to any Real Property Tax.  If at any time during 
the Lease Term the method of taxation or assessment of Parcel E prevailing as 
of the Effective Date shall be altered so that in lieu of or in addition to 
any Real Property Tax described above there shall be levied, assessed or 
imposed (whether by reason of a change in the method of taxation or 
assessment, creation of a new tax or charge, or any other cause) an alternate 
or additional tax or charge (i) on the value, use or occupancy of Parcel E, 
(ii) on or measured by the gross receipts, income or rentals from Parcel E, 
(iii) on Landlord's business of leasing Parcel E, or (iv) computed in any 
manner with respect to the operation of Parcel E, then any such tax or 
charge, however, designated, shall be included within the meaning of the term 
"Real Property Taxes" for purposes of this Lease.  If any Real Property Tax 
is based upon property or rents unrelated to Parcel E, then only that part of 
such Real Property Tax that is fairly allocable to Parcel E shall be included 
within the meaning of the term "Real Property Taxes".  

                          (2)     EXCLUDED FROM DEFINITION.  Notwithstanding 
the foregoing, the following shall not constitute Real Property Taxes for the 
purpose of this Lease, and nothing herein shall be deemed to require Tenant 
to pay any of the following:  (i) any state, local, federal, personal or 
corporate income tax measured by the net income of Landlord from all sources; 
(ii) any estate or inheritance taxes; (iii) any franchise, succession or city 
or county transfer taxes; (iv) interest on taxes or penalties resulting from 
Landlord's failure to pay taxes (unless due to Tenant's failure to pay to 
Landlord Real Property Taxes as provided herein); and (v) any tax imposed on 
the Premises due to

                                     -10-


<PAGE>

the presence, use or release of Hazardous Materials thereon unless based on 
Tenant's storage, disposal or use of Hazardous Materials on the Premises.

                 B.       TENANT'S OBLIGATION TO REIMBURSE.  As Additional 
Rent, Tenant shall pay to Landlord all Real Property Taxes which become due 
after the Commencement Date and continuing throughout the remainder of the 
Lease Term to the extent that such Real Property Taxes are fairly allocable 
to the Lease Term.  Tenant shall pay Real Property Taxes (i) within thirty 
(30) days after Tenant's receipt of Landlord's written billing therefor 
(which billing shall include a copy of Landlord's applicable tax bills or 
other evidence reasonably available to Landlord substantiating the amount 
billed to Tenant), or (ii) no later than twenty (20) days before such Real 
Property Tax becomes delinquent, whichever last occurs.  Tenant may not 
withhold payment of such bill pending receipt and/or review of such evidence. 
 If any Lender requires Landlord to impound Real Property Taxes on a periodic 
basis during the Lease Term, then Tenant, on notice from Landlord indicating 
this requirement, shall pay a sum of money toward its liability under this 
paragraph to Landlord on the same periodic basis as required by Tenant's 
Lender, if any, but no more frequently than once a month.  If any assessments 
are levied against Parcel E, Landlord may elect either to pay the assessment 
in full or to allow the assessment to go to bond.  If Landlord pays the 
assessment in full, Tenant shall pay to Landlord each time payment of Real 
Property Taxes is made a sum equal to that which would have been payable (as 
both principal and interest) had Landlord allowed the assessment to go to 
bond with the maximum payment period allowed thereunder.

                 C.       TAXES ON TENANT'S PROPERTY.  Tenant shall pay 
before delinquency any and all taxes, assessments, license fees and public 
charges levied, assessed or imposed against Tenant or Tenant's estate in this 
Lease or the property of Tenant situated within the Premises which become due 
during the Lease Term.  Tenant shall furnish Landlord with satisfactory 
evidence of these payments within thirty (30) days after receipt of written 
request therefor from Landlord, but no more than once each year.

         10.     UTILITIES.  Tenant shall pay all utility deposits and fees, 
and all monthly service charges for heat, water, gas, electricity, sewer 
service, elevator (if there be any) and cleaning service, telephone service, 
and any other utilities whatsoever furnished to the Premises during the 
period commencing on the earlier to occur of the Commencement Date or the 
date Tenant occupies any portion of the Premises pursuant to subparagraph 
4(B) and continuing throughout the remainder of the Lease Term.

         11.     INSURANCE.

                 A.       TENANT'S INSURANCE.  Tenant shall maintain 
insurance complying with all of the following:


                                      -11-

<PAGE>

                          (1)     Tenant shall procure, pay for and keep in 
full force and effect the following:

                                  a.       Commercial general liability 
insurance, including property damage, against liability for personal injury, 
bodily injury, death and damage to property occurring in or about, or 
resulting from an occurrence in or about, the Premises with combined single 
limit coverage of not less than Two Million Dollars ($2,000,000), which 
insurance shall contain a "contractual liability" endorsement insuring 
Tenant's performance of Tenant's obligation to indemnify Landlord contained 
in paragraph 26 hereof;

                                  b.       Fire and property damage insurance 
in so-called "all risk" form insuring Tenant's Trade Fixtures and Tenant's 
Alterations for the full replacement cost thereof;

                                  c.       Such other insurance that is 
reasonably required by Landlord or Landlord's Lender and customarily required 
by landlords of similar properties in Santa Clara County, or lenders who do 
business in Santa Clara County, and available at commercially reasonable 
rates.

                          (2)     Where applicable and required by Landlord, 
each policy of insurance required to be carried by Tenant pursuant to this 
paragraph 11:  (i) shall name as additional insureds Landlord and, if 
requested by Landlord, Landlord's Lender, property manager and/or directors; 
(ii) shall be primary insurance which provides that the insurer shall be 
liable for the full amount of the loss up to and including the total amount 
of liability set forth on the declaration page of each such policy without 
the right of contribution from any other insurance coverage of Landlord; 
(iii) shall be carried with companies licensed to do business in California 
and which have a general policy holders rating of at least "A" and a 
financial rating of at least "VIII" as set forth in the most current issue of 
Best's Insurance Guide; (iv) shall contain a provision whereby the insurer 
will endeavor to provide Landlord with thirty (30) days' prior written notice 
of any proposed cancellation, lapse or change of any policy; (v) shall not 
have a "deductible" in excess of Twenty-Five Thousand Dollars ($25,000) 
without Landlord's consent; (vi) shall contain a "cross liability" 
endorsement; and (vii) shall contain a "severability of interest" clause.  If 
Tenant has in full force and effect a blanket policy of liability insurance 
with the same coverage for the Premises as described above, as well as other 
coverage of other premises and properties of Tenant, or in which Tenant has 
some interest, such blanket insurance shall satisfy the requirements of this 
subparagraph 11.A.

                          (3)     Evidence of insurance certifying that the 
insurance to be carried by Tenant pursuant to this subparagraph 11.A is in 
effect, shall be delivered to Landlord prior to the time Tenant or any of its 
Agents takes possession of, or commences any construction activities at, the 
Premises and upon renewal of such policies, but not less than ten (10) days 
prior to the expiration of the term of such coverage.  If any Lender or 
Landlord's insurance advisor reasonably determines at any time that the 
amount of coverage required for any policy of insurance Tenant is to obtain 
pursuant to this subparagraph 11.A is not adequate, then Tenant shall 
increase such coverage for such

                                     -12-

<PAGE>


insurance to such amount as such Lender or insurance advisor reasonably deems 
adequate, not to exceed the level of coverage for such insurance as is 
reasonable and customarily required of tenants occupying similar properties 
in Santa Clara County owned by life insurance companies and other 
institutional investors.

                 B.       LANDLORD'S INSURANCE.  Landlord shall have the 
following obligations and options regarding insurance:

                          (1)     Landlord shall maintain a policy or 
policies of fire and property damage insurance in so-called "all risk" form 
(on an "occurrence" basis) insuring Landlord (and such others as Landlord may 
designate) against loss of rents for a period of not more than twelve (12) 
months and from physical damage to the Premises and, if Landlord so elects, 
to the improvements within the Common Areas, with coverage of not less than 
the full replacement cost thereof (which insurance is hereinafter referred to 
as "Landlord's Property Insurance").  Landlord may so insure the Premises 
separately, or may insure the Premises with other property owned by Landlord 
which Landlord elects to insure together under the same policy or policies, 
provided that the amount of insurance and the type of coverage required to be 
provided hereunder is not thereby diminished, changed or adversely affected.  
Landlord's Property Insurance may be endorsed to cover loss caused by such 
additional perils against which Landlord may elect to insure, including 
earthquake and/or flood, and to provide such additional coverage as Landlord 
reasonably requires.  Landlord shall not be required to cause such insurance 
to cover any Trade Fixtures or Alterations of Tenant.

                          (2)     Landlord shall maintain a policy or 
policies of commercial general liability insurance (on an "occurrence" basis) 
insuring Landlord (and such others as are designated by Landlord) against 
liability for personal injury, bodily injury, death and damage to property 
occurring or resulting from an occurrence in, on or about the Premises, with 
combined single limit coverage in the amount of Two Million Dollars 
($2,000,000); provided, however, if any Lender or Landlord's insurance 
advisor reasonably determines that the coverage limits of such policy are 
inadequate, then Landlord may increase such coverage to such amount as such 
Lender or insurance advisor reasonably deems adequate, not to exceed the 
level of coverage for such insurance customarily carried by owners of 
comparable properties similarly situated.  If Landlord has in full force and 
effect a blanket policy of liability insurance with the same coverage for the 
Premises as described above, as well as other coverage of other premises and 
properties of Landlord, or in which Landlord has some interest, such blanket 
insurance shall satisfy the requirements of this subparagraph 11.B.

                 C.       TENANT'S OBLIGATION TO REIMBURSE.  Tenant shall 
reimburse Landlord for the full amount of the cost of the insurance described 
in paragraph 2.B(1) and Tenant's Prorata Share of the cost of the insurance 
described in paragraph 2.B(2) which, if billed separate and apart from Common 
Operating Expenses, shall be paid within thirty (30) days of Tenant's receipt 
of Landlord's billing therefor.  Landlord shall provide Tenant with evidence 
reasonably available to Landlord substantiating the cost of such insurance.


                                     -13-

<PAGE>

                 D.       RELEASE AND WAIVER OF SUBROGATION.  Any other 
provision of this Lease to the contrary notwithstanding, the parties hereto 
release each other, and their respective agents and employees, from any 
liability for injury to any person or damage to property that is caused by or 
results from any risk to the extent insured against under any valid and 
collectible insurance policy carried by either of the parties, subject to the 
following limitations:  (i) the foregoing provision shall not apply to the 
commercial general liability insurance described by subparagraphs 11.A(1)(a) 
and 11.B(2); (ii) such release shall apply to liability resulting from any 
risk insured against by Tenant in satisfaction of the requirements of 
subparagraph 11.A(1)(b) and by Landlord in satisfaction of the requirements 
of subparagraph 11.B(1) of the Lease; and (iii) neither Landlord nor Tenant 
shall be released from any such liability to the extent any damages resulting 
from such injury or damage are not part of the recovery obtained by the other 
from such insurance, but only if the insurance in question permits such 
partial release in connection with obtaining a waiver of subrogation from the 
insurer.  Notwithstanding the preceding sentence, the release set forth in 
this subparagraph 11.D shall apply to the extent any sums are payable under 
the policy in question, whether or not recovery is actually obtained by the 
releasing party.  Tenant's obligations to pay any deductible amounts under 
insurance policies carried by Landlord pursuant to paragraph 11.B shall be 
limited by the express provisions of paragraph 18.D.  This release shall be 
in effect only so long as the applicable insurance policy contains a clause 
to the effect that this release shall not affect the right of the insured to 
recover under such policy.  Each party shall cause its property insurance 
policy to provide that the insurer waives all right of recovery by way of 
subrogation against the other party and its Agents in connection with any 
injury or damage covered by such policy; provided, however, if any such 
insurance policy cannot be obtained with such a waiver of subrogation, or 
such waiver of subrogation is only available at rates which are not 
commercially reasonable, then the party obtaining such insurance shall notify 
the other party of that fact and thereupon shall be relieved of the 
obligation to obtain such waiver of subrogation rights from the insurer with 
respect to the particular insurance involved.  Each party represents to the 
other that, as of the Commencement Date of this Lease, a waiver of 
subrogation rights as described herein is in effect, and each party shall 
provide the other with a minimum of thirty (30) days' written notice before 
any such waiver with respect to that party's insurance coverage ceases to be 
in effect.

         12.     LANDLORD'S RIGHT TO PERFORM TENANT'S COVENANTS.  Tenant 
agrees that, if Tenant shall at any time fail to pay within the grace period 
herein provided any mechanics lien, taxes or other fees and charges the 
non-payment of which may place in jeopardy Landlord's interest in the Project 
or any portion thereof, or if Tenant shall at any time fail to perform any 
other act to be made or performed by it under this Lease within the grace 
period provided therefor, Landlord may, but shall not be obligated to, make 
such payment or perform such other act to the extent Landlord may reasonably 
deem such action necessary for the protection of the Premises or the Project, 
and without waiving or releasing Tenant from any obligation under this Lease. 
All sums so paid by Landlord and all reasonable expenses paid in connection 
therewith, together with interest thereon at the Default Interest Rate from 
the date of such payment until repaid by Tenant, shall be paid by Tenant to 


                                     -14-

<PAGE>

Landlord on demand. Landlord shall provide Tenant with evidence reasonably 
available to Landlord as to such sums and expenses paid by Landlord.

         13.     MAINTENANCE AND REPAIR.

                 A.       CONDITION ON DELIVERY.  Tenant shall accept the 
Premises in the condition existing as of the Effective Date, "as-is", subject 
to performance by Landlord of its obligations under the Improvement Agreement 
and except that Landlord shall, at its sole expense, cause the following 
building systems and equipment to be in good working order as of the 
Commencement Date and during the seven (7) months thereafter (the "Specified 
Systems"):  HVAC, electrical and lighting, plumbing, mechanical, fixtures 
existing on the Premises on the Commencement Date, the roof (including the 
roof membrane), the structural elements of the Building, the fire protection 
system and all exterior landscaping, walkways, paved areas and driveways.  
Landlord, at Landlord's sole cost, shall make any repair or replacement 
required to be made to the mechanical, electrical, plumbing and/or HVAC 
systems of which Landlord is notified in writing on or before the two hundred 
tenth  (210th) day following the Commencement Date; provided, however, that 
Landlord shall not be responsible for any such repair or replacement 
necessitated as a result of the actions or omissions of Tenant or its Agents. 

                 B.       TENANT'S OBLIGATIONS.  Except as otherwise provided 
in subparagraphs 13.A and 13.C, Tenant shall be responsible, at its sole 
expense, for the following during the period beginning on the earlier to 
occur of the Commencement Date or the date Tenant enters into occupancy of 
any portion of the Premises pursuant to subparagraph 4.B and continuing 
throughout the remainder of the Lease Term:

                          (1)     Tenant shall clean and maintain in good 
order, condition, and repair and replace (subject, however, to the 
limitations of subparagraph 13.B(5), below) when necessary the interior, 
non-structural portions of the Building, through regular inspections and 
servicing, including, but not limited to:  (i) all plumbing and sewage 
facilities inside the Building (including all sinks, toilets, faucets and 
drains), and all ducts, pipes, vents or other parts of the HVAC or plumbing 
system as provided in subparagraph 13.B(2), below; (ii) all fixtures, 
interior walls, floors, carpets and ceilings; (iii) all windows, doors, 
entrances, plate glass, showcases and skylights (including cleaning both 
interior and exterior surfaces); (iv) all electrical facilities and all 
equipment (including all lighting fixtures, lamps, bulbs, tubes, fans, vents, 
exhaust equipment and systems) as provided in subparagraph 13.B(2) below; and 
(v) any automatic fire extinguisher equipment in the Premises.  However, in 
no event shall Tenant's obligation to repair under this paragraph extend to 
(i) damage and repairs covered by any insurance policy carried by Landlord in 
connection with the Premises for which Landlord receives proceeds; (ii) 
damage caused in whole or in part by the negligence or willful misconduct of 
Landlord or Landlord's Agents; (iii) repairs covered under Common Operating 
Expenses; (iv) damage by fire and other casualties, or acts of governmental 
authorities, or acts of God and the elements, (v) repairs and or alterations 
required by Law, except as otherwise provided in

                                     -15-


<PAGE>

paragraph 15 of this Lease, and (vi) damage and repairs the cost for which 
Landlord is reimbursed by others.  Notwithstanding anything to the contrary 
contained in this subparagraph 13.B, Tenant's obligations and liabilities in 
connection with the presence of Hazardous Materials on the Premises shall be 
limited to the express provisions of paragraph 16 of this Lease.  Landlord 
shall identify and, upon request of Tenant, assign to Tenant, any and all 
warranties in existence with respect to items to be maintained or repaired by 
Tenant hereunder and shall assist Tenant as reasonably necessary to enforce 
any such warranties.

                          (2)     With respect to utility facilities serving 
the Premises (including electrical wiring and conduits, gas lines, water 
pipes, and plumbing and sewage fixtures and pipes), Tenant shall be 
responsible for the maintenance and repair of any such facilities which are 
within the Premises.  For the purpose of this subparagraph 13.B(1) and 
paragraph 13.C(1), the term "within the Premises" shall mean from the point 
that the element of the utility facility in question (E.G. the conduit, line, 
pipe) exits from the foundation, second floor deck or interior wall of the 
Building, as applicable, and into the Premises.  Tenant shall replace any 
damaged or broken glass in the Premises (including all interior and exterior 
doors and windows) with glass of the same kind, size and quality.  Tenant 
shall repair any damage to the Premises (including exterior doors and 
windows) caused by vandalism or any unauthorized entry, but not including 
cosmetic damage to the exterior of the Building, which shall be repaired by 
Landlord and charged as a Common Operating Expense as provided in 
subparagraph 13.E, below.

                          (3)     Except as otherwise provided in 
subparagraph 13.A, Tenant shall (i) maintain, repair and replace (subject, 
however, to the limitations set forth in subparagraph 13.B(5), below) when 
necessary all HVAC equipment and elevators (if any) which serve the Premises, 
and shall keep the same in good condition through regular inspection and 
servicing, and (ii) maintain continuously throughout the Lease Term service 
contracts for the maintenance of all such HVAC equipment and elevators (if 
any) with licensed repair and maintenance contractors approved by Landlord, 
which contracts shall provide for the periodic inspection and servicing of 
the HVAC equipment and elevators (if any) at intervals not less frequent than 
those recommended by the manufacturer of the equipment which is the subject 
of such contract.  All such service contracts shall include terms and 
conditions which are usual and customary for similar services provided in the 
vicinity of the Project. On Landlord's request, Tenant shall furnish Landlord 
with copies of all such service contracts and shall thereafter provide 
Landlord with copies of any amendments thereto or replacement contracts.  All 
such service contracts shall provide that they may not be canceled or changed 
without at least thirty (30) days prior written notice to Landlord.

                          (4)     All repairs and replacements required of 
Tenant shall be promptly made with materials of a kind and quality 
substantially similar to Landlord's building standard at that time.  If the 
work affects the structural parts of the Building, then Tenant shall first 
obtain Landlord's approval of the scope of work, plans therefor, materials to 
be used, and the contractor selected by Tenant to perform such work.


                                     -16-

<PAGE>

                          (5)     If the aggregate replacements or 
restorations required of Tenant pursuant to this subparagraph 13.B would 
cause Tenant to make payments constituting capital expenditures in excess of 
Fifty Thousand Dollars ($50,000) per year (applying generally accepted 
accounting principles), then the amount of such capital expenditure in excess 
of such amount each year shall be paid by Landlord.  The amount so paid by 
Landlord shall be amortized over the useful life of the improvement or 
equipment in question with interest on the unamortized balance at the then 
prevailing market rate Landlord would pay if it borrowed funds on a 
non-secured basis to construct such improvements from an institutional 
lender, and Tenant shall pay monthly amortization payments and interest on 
account thereof for the remainder of the Lease Term.  Landlord shall inform 
Tenant of the monthly amortization and interest payment required to so 
amortize such cost, and shall also provide Tenant with the information (in 
reasonable detail) upon which Landlord made such determination.

                 C.       LANDLORD'S OBLIGATION TO MAINTAIN.

                          (1)     BUILDING.  Landlord, at its cost without 
right of reimbursement from Tenant, shall be responsible for the maintenance, 
repair and replacement of (i) the structural portions of the Building, 
including the foundation, exterior and interior load-bearing walls, ground 
floor slab and second floor deck (if any), and structural roof system (but 
excluding roof membrane); and (ii) any damage to the Premises caused by the 
negligence or willful misconduct of Landlord or Landlord's Agents.  In 
addition, Landlord shall maintain, clean, repair and replace as necessary, 
subject to reimbursement from Tenant as part of Common Operating Expenses, 
(i) paint on the exterior of the Building; (ii) gutters, downspouts and 
exterior doors of the Building; (iii) the roof membranes of the Building; and 
(iv) all portions of any utility facilities serving the Premises and other 
buildings within the Project (including electrical wiring and conduits, gas 
lines, water pipes, and plumbing and sewage fixture and pipes) which are not 
the responsibility of Tenant pursuant to subparagraph 13.B(2), above. Tenant 
shall reimburse Landlord for any damage to the portions of the Premises 
described in this subparagraph 13.C which is caused by the negligence or 
willful misconduct of Tenant or Tenant's Agents and which is not covered by 
Landlord's insurance.  Tenant may give Landlord notice of any repairs that 
are required of Landlord under the terms of this Lease and Landlord shall 
proceed to complete such repairs with reasonable diligence, but in no event 
later than thirty (30) days of receipt of such notice, or such additional 
period as may be reasonably required to complete such repairs provided that 
such repair work has commenced within said thirty (30) day period and is 
thereafter prosecuted to completion with diligence and continuity.  In the 
event of an emergency, Tenant shall be empowered to undertake immediate 
repairs of such nature as would be Landlord's responsibility and notify 
Landlord promptly after such repairs have been undertaken.  If Landlord fails 
to complete any repairs or maintenance required of it hereunder within the 
thirty (30) days following receipt of Tenant's written notice as provided 
hereunder (which 30-day period may be extended as provided above), or if 
Tenant undertakes emergency repairs as above stated, Tenant may, in addition 
to any other remedies it may have at law or in equity, perform the repairs or 
maintenance and bill Landlord

                                     -17-

<PAGE>


for the cost thereof, in which event Landlord shall reimburse Tenant for such 
cost within thirty (30) days of the date of such billing.

                          (2)     COMMON AREAS.  Landlord shall repair, 
maintain, operate and replace when necessary the Common Areas in order to 
keep them in good, clean and safe condition, with such right of reimbursement 
from Tenant as is specified in subparagraphs 13.D and E, below.  Landlord 
shall not be responsible for repairs required by an accident, fire or other 
peril except as otherwise required by paragraph 18 hereof, or for damage 
caused to any part of the Project by any act, negligence or omission of 
Tenant or its Agents, except to the extent covered by Landlord's insurance.  
Landlord may engage contractors of its choice to perform the obliga-tions 
required of it by this paragraph, and the necessity of any expenditure to 
perform such obligations shall be at the sole discretion of Landlord.

                 D.       TENANT'S EARLY OCCUPANCY DATE OR THE OBLIGATION TO 
REIMBURSE.  As Additional Rent, commencing on the Early Occupancy Date or the 
Commencement Date, as applicable, and continuing throughout the remainder of 
the Lease Term, Tenant shall pay a share of all Common Operating Expenses 
fairly allocable to the Premises including (i) all Common Operating Expenses 
paid with respect to the maintenance, repair, replacement and use of the 
Premises, and (ii) Tenant's Prorata Share of all Common Operating Expenses 
which relate to the Project in general and are not fairly allocable to any 
one building on the Project.  As used herein, expenses which are "fairly 
allocable to the Premises" or "fairly allocable to any one building on the 
Project" shall mean those expenses of maintenance, repair, replacement or use 
which benefit the Premises or such single building only, such as (by way of 
illustration, but not limitation) exterior repainting of the Premises or 
other building.  Landlord agrees that it shall not recover from all occupants 
of the Project more than one hundred percent (100%) of the actual Common 
Operating Expenses incurred by Landlord for the period in question.  Any 
Common Operating Expenses charged to Landlord by any of its affiliates for 
goods and services provided to the Common Areas shall not exceed the 
prevailing cost thereof that would be charged to Landlord by non-affiliated 
parties.  All Common Operating Expenses shall be directly attributable to the 
operations, maintenance, management and repair of the Project. Payment shall 
be made by whichever of the following methods is from time to time designated 
by Landlord, and Landlord may change the method of payment at any time so 
long as (i) Landlord gives Tenant at least sixty (60) days prior written 
notice, and (ii) the method is not changed more than once in any calendar 
year.  Tenant shall pay such share of the actual Common Operating Expenses 
incurred or paid by Landlord but not theretofore billed to Tenant within 
thirty (30) days after receipt of a written bill therefor from Landlord, on 
such periodic basis as Landlord shall designate, but in no event more 
frequently than once a month.  Alternatively, (i) Landlord shall deliver to 
Tenant Landlord's reasonable estimate of the Common Operating Expenses it 
anticipates will be paid or incurred for the calendar year in question, (ii) 
during such calendar year, Tenant shall pay Tenant's Prorata Share of the 
estimated Common Operating Expenses in advance in monthly installments as 
required by Landlord due with each installment of Basic Rent, and (iii) 
within ninety (90) days after the end of each calendar year, Landlord shall 
furnish to Tenant a statement in reasonable detail, certified by an

                                    -18-

<PAGE>

officer of Landlord, of the actual Common Operating Expenses paid or incurred 
by Landlord during the calendar year just ended and thereupon there shall be 
an adjustment between Landlord and Tenant, with payment to Landlord or credit 
by Landlord against the next installment of Basic Rent, as the case may 
require, within thirty (30) day after delivery by Landlord to Tenant of said 
statement, so that Landlord shall receive the entire amount of Tenant's 
Prorata Share of all Common Operating Expenses for such calendar year and no 
more.

                 E.       COMMON OPERATING EXPENSES DEFINED.  The term 
"Common Operating Expenses" shall mean the sum of the following:

                          (1)     All costs and expenses reasonably paid or 
incurred by Landlord in doing the following (including payments to 
independent contractors providing services related to the performance of the 
following):  (i) maintaining, cleaning, and repairing the exterior surfaces 
(including repainting of exterior surfaces of buildings as reasonably 
necessary) of all buildings located on the Project; (ii) maintenance of 
Landlord's insurance required under the provisions of paragraph 11 (including 
the prepayment of premiums for coverage of up to one year); (iii) 
maintaining, repairing, operating and replacing when necessary utility 
facilities and other equipment serving all buildings within the Project 
and/or the Common Areas; (iv) providing utilities to the Common Areas 
(including lighting, trash removal and water for landscaping irrigation); (v) 
complying with all applicable Laws (subject to subparagraph 13.E(2)); (vi) 
operating, maintaining, repairing, cleaning, painting, restriping and 
resurfacing the Common Areas; (vii) maintaining, repairing, operating and 
replacing when necessary those items described in the second sentence of 
subparagraph 13.C(1);(viii) replacement or installation of lighting fixtures, 
directional or other signs and signals, irrigation systems, trees, shrubs, 
ground cover and other plant materials, and all landscaping in the Common 
Areas; and (ix) rental paid for maintenance and operating machinery and 
equipment (if rented).

                          (2)     All additional costs and expenses 
reasonably incurred by Landlord with respect to the operation, protection, 
maintenance, repair and replacement of the Project which pursuant to 
generally accepted accounting principles would be considered a current 
expense and not a capital expenditure; provided, however, any cost and 
expenses incurred by the Landlord with respect to the operation, protection, 
maintenance, repair and replacement of the Project which, according to 
generally accepted accounting principles, would be a capital expenditure, 
shall be amortized over the useful life of the equipment or improvement which 
is the subject of such expenditure, and there shall be included in "Common 
Operating Expenses" only that portion of such amortization as is fairly 
allocable to the calendar year in question.  Any such capital expenditure 
shall be amortized over the useful life of the capital improvement or 
equipment in question with interest on the unamor-tized balance at the then 
prevailing market rate Landlord would pay if it borrowed funds on a 
non-secured basis to construct such improvements from an institutional lender.

                          (3)     That portion of all compensation (including 
benefits and premiums for workers' compensation and other insurance) paid to 
or on behalf of employees of Landlord but only

                                     -19-

<PAGE>

to the extent they are involved in the performance of the work described by 
subparagraphs 1 and 2 above and that is fairly allocable to the Project.

                          (4)     An administrative fee payable to Landlord 
or, if maintenance and operation of the Common Areas is managed by an 
independent property management service engaged by Landlord, to such property 
management service, in an amount not greater than ten percent (10%) of the 
sum of Tenant's per annum obligation to pay (i) Common Operating Expenses 
(less the administrative fee described in this subparagraph 13.E(4)), and 
(ii) Real Property Taxes.

                          (5)     Notwithstanding anything contained herein, 
the term "Common Operating Expenses" shall not include any of the following:  
(i) mortgage principal payments; (ii) ground rent and other payments made 
pursuant to any ground lease or any financing secured by real estate within 
the Project; (iii) the cost of refinancing any loan secured by the Project; 
(iv) interest and penalties imposed against Landlord for late payments by 
Landlord (except to the extent resulting from a default by Tenant hereunder); 
(v) legal fees incurred by Landlord in connection with the negotiation or 
enforcement of, or litigation in connection with, any lease affecting the 
Project or, except as otherwise expressly provided in any other paragraph of 
this Lease, in connection with any other dispute with any other tenant in the 
Project; (vi) any costs reimbursed to Landlord by insurance or other third 
party payments that are not reimbursements by occupants of the Project for 
their share of Common Operating Expenses; (vii) brokerage commissions or 
other costs related to the leasing of space within the Project; (viii) the 
cost of any tenant improvements installed for the exclusive use of any other 
occupant of the Project or any services that are supplied for the exclusive 
benefit of any other occupant of the Project; (ix) alterations, additions, 
improvements or replacements made to rectify or correct any defect in the 
design, materials or workmanship of the Common Areas or Project; (x) repairs 
necessitated by the negligence or willful misconduct of Landlord or 
Landlord's Agents; (xi) Landlord's general overhead expenses; (xii) 
depreciation, (xiii) any costs which are not fairly allocable to the Lease 
Term, and (xiv) any costs in connection with the maintenance, repair or 
replacement of the structural portions of the Building which are Landlord's 
obligations pursuant to subparagraph 13.C(1) of this Lease.  Notwithstanding 
anything to the contrary contained in this subparagraph 13.E, Tenant's 
obligations and liabilities arising from or in connection with the presence 
of Hazardous Materials on the Premises shall be limited to the express 
provisions of paragraph 16 of this Lease.

                 F.       AUDIT.  Landlord shall keep for a period of at 
least two (2) years after the expiration of each calendar year, full and 
accurate books, records and supporting documents in connection with Real 
Property Taxes and Common Operating Expenses incurred by Landlord.  Tenant 
shall have the right to challenge the accuracy of Real Property Taxes and 
Common Operating Expenses for any given calendar year only by giving Landlord 
written notice of such challenge by the date which is one hundred eighty 
(180) days following the date that Tenant receives Landlord's statement of 
Real Property Taxes and Common Operating Expenses.  If Tenant does not give 
Landlord such notice by such date, Tenant shall be deemed to have waived any 
further right to

                                     -20-


<PAGE>

challenge the accuracy of Real Property Taxes and Common Operating Expenses 
for the calendar year most recently ended.  If Tenant timely challenges any 
Real Property Taxes and Common Operating Expenses, Landlord shall, upon not 
less than five (5) business days prior written notice from Tenant, make 
available to Tenant Landlord's books and supporting materials, and Tenant may 
audit the same.  The Real Property Taxes and Common Operating Expenses shall 
be appropriately adjusted on the basis of such audit.  Tenant shall pay the 
cost and expense of such audit, unless such audit shows that Real Property 
Taxes and Common Operating Expenses for the period covered by such audit have 
been overstated by more than ten percent (10%), in which event Landlord shall 
pay the reasonable costs and expenses of such audit.

                 G.       CONTROL OF COMMON AREAS.  Landlord shall at all 
times have exclusive control of the Common Areas.  Landlord shall have the 
right,  at Landlord's sole cost and expense, without benefit of reimbursement 
from Tenant as a Common Operating Expense (except as otherwise expressly 
provided below), without the same constituting an actual or constructive 
eviction and without entitling Tenant to any abatement of rent, to:  (i) 
close any part of the Common Areas to whatever extent required in the opinion 
of Landlord's counsel to prevent a dedication thereof or the accrual of any 
prescriptive rights therein; (ii) temporarily close the Common Areas to 
perform maintenance or for any other reason reasonably deemed sufficient by 
Landlord; (iii) change the shape, size, location and extent of the Common 
Areas (the costs of which may not be charged as Common Operating Expenses); 
(iv) make changes to the Common Areas including, without limitation, changes 
in the location of driveways, entrances, passageways, doors and doorways, 
elevators, stairs, restrooms, exits, parking spaces, parking areas, sidewalks 
or the direction of the flow of traffic and the site of the Common Areas, 
subject, however, to the restrictions and limitations set forth in 
subparagraph 3.E hereof; (v) remove unauthorized persons or vehicles from the 
Common Areas; and/or (vi) change the name of the Project and/or Building.  
Landlord may not change the address of the Building without the prior written 
consent of Tenant.  Tenant shall keep the Common Areas clear of all 
obstructions created or permitted by Tenant.  If in the opinion of Landlord 
unauthorized persons are using any of the Common Areas by reason of the 
presence of Tenant in the Building, Tenant, upon demand of Landlord, shall 
restrain such unauthorized use by appropriate proceedings.  In exercising any 
such rights regarding the Common Areas, Landlord shall make a reasonable 
effort to minimize any disruption to Tenant's business or interfere with 
Tenant's access to the Premises.  Tenant assumes all responsibility for the 
protection of Tenant and Tenant's Agents from acts of third parties except to 
the extent of damage caused by the gross negligence of Landlord or Landlord's 
employees, agents or contractors.

         14.     SURRENDER OF PREMISES.  Upon expiration or any sooner 
termination of this Lease (hereinafter "Lease Termination"), Tenant shall 
surrender to Landlord the entire Premises, together with all Alterations 
which Tenant is not allowed to remove pursuant to the terms of this Lease, in 
the same condition as when received or installed, ordinary wear and tear and 
damage due to casualty or other event outside the control of Tenant excepted, 
and clean and free of debris and free of any liens created or suffered to be 
created by Tenant.  As to any Alterations made to the Premises after 

                                      -21-

<PAGE>

completion of the initial Tenant Improvements, Landlord shall inform Tenant 
when Landlord consents to an Alteration whether or not such Alteration must 
be removed by Tenant at Lease Termination.  If simultaneously with its 
consent to the Alteration, Landlord requests Tenant to remove any Alteration 
at Lease Termination, Tenant shall remove the same prior to Lease Termination 
and shall at its expense restore the Premises to the condition existing 
before the Alteration was made.  In addition, Tenant shall remove prior to 
Lease Termination all Alterations made without Landlord's consent and shall, 
at Tenant's expense, restore the Premises to the condition existing before 
such Alterations were made.  Any Alterations, changes or additions not 
required to be removed by Tenant and not actually removed by Tenant prior to 
Lease Termination (if Tenant has the right to remove such Alterations 
pursuant to subparagraph 17.C of this Lease) shall immediately upon Lease 
Termination become Landlord's property.  Landlord may, at Tenant's expense, 
dispose of in any manner permitted by Law any Trade Fixtures or personal 
property of Tenant that Tenant does not remove from the Premises upon 
expiration or termination of the Lease Term.

         15.     COMPLIANCE WITH LAWS.

                 A.       LANDLORD'S OBLIGATIONS.

                          (1)     Landlord represents and warrants that as of 
the execution of this Lease, to Landlord's knowledge, no action, proceeding 
or claim is pending or threatened with respect to the Premises concerning a 
violation of any Law applicable to the condition of the Premises.

                          (2)  Landlord shall, at Landlord's sole cost and 
expense (which cost and expense shall not be included in the Allowance or 
Additional Allowance, as such terms are defined in the Improvement Agreement) 
construct any alterations or improvements to the Premises (both interior and 
exterior) required by Law as a condition to the issuance of all required 
permits and approvals from the appropriate governmental authorities for the 
construction of the Tenant Improvements and legal occupancy of the Premises 
by Tenant (which work shall be referred to herein as the "Initial Compliance 
Work").  Notwithstanding the foregoing to the contrary, the following shall 
apply:

                                  (i)      Tenant shall be responsible for 
the cost of any Initial Compliance Work in excess of One Hundred Thousand 
Dollars ($100,000) (which excess cost may be paid by Tenant out of the 
Allowance and Additional Allowance).  

                                  (ii)     Landlord shall not be responsible 
for any work described in subparagraph 15.A(2) if required as a result of the 
construction of Tenant's special purpose improvements, if any. The cost of 
such work, however, may be paid out of the Allowance and Additional 
Allowance.  For the purpose of this subparagraph 15.A(2), the term "special 
purpose improvements" shall mean improvements that are not of general utility 
to the Building (such as wall, window, and floor covering, walls, doors and 
lighting fixtures), which special purpose improvements


                                     -22-

<PAGE>

include, without limitation, clean rooms, wet and dry labs, raised computer 
floors, auditoriums, cafeterias, atmosphere controlled areas (including, 
without limitation, increased HVAC capacity), command modules, satellite 
transmission dishes and interior stairwells.  Notwithstanding the foregoing, 
Landlord shall be responsible for work described in subparagraph 15.A(2) to 
be made to the cafeteria so long as such work is not required as a result of 
special improvements made by Tenant to the cafeteria.

                          (3)     Except to the extent provided to the 
contrary in the preceding subparagraphs of this paragraph 15.A or in 
paragraph 15.B which follows, if any Law requires any alteration, repair, 
replacement or addition to the interior of the Building ("Law Compliance 
Work"), the cost of which, according to generally accepted accounting 
principles, would be a capital expenditure, Landlord shall cause such Law 
Compliance Work to be completed and the cost thereof shall be amortized over 
the useful life of the improvement or equipment so constructed with interest 
on the unamortized balance at the then prevailing market rate Landlord would 
pay if it borrowed funds on a non-secured basis to construct such 
improvements or equipment from an institutional lender. Landlord shall 
furnish to Tenant verification of all costs so incurred and details of the 
amortization thereof. Tenant shall pay as Additional Rent each month during 
the remainder of the Lease Term following completion of the Law Compliance 
Work in question, on the due date of each installment of Basic Rent, that 
portion of amortization of cost of such Law Compliance Work and interest as 
is applicable to such month."

                 B.       TENANT'S OBLIGATIONS.  Except to the extent 
provided to the contrary in paragraph 15.A, Tenant shall, at its sole 
expense, comply promptly with all Laws applicable on account of Tenant's use 
of the Premises.  Additionally, and notwithstanding anything to the contrary 
in subparagraph 15.A(3), Tenant shall be solely responsible for compliance 
with any Law applicable to the Premises, where such compliance is required 
because of Tenant's particular use of the Premises or because of or as a 
condition to the issuance of any governmental approval required by reason of 
Alterations constructed and installed by Tenant.

         16.     HAZARDOUS MATERIALS.

                 A.       TENANT'S OBLIGATIONS.  Tenant has completed and 
duly executed, and there is attached hereto as EXHIBIT "E", a copy of a 
questionnaire pertaining to Tenant's use of Hazardous Materials (the 
"Hazardous Materials Questionnaire").  Tenant represents and warrants to 
Landlord that all information set forth in the Hazardous Materials 
Questionnaire is true and correct as of the Effective Date.  Tenant shall not 
cause or permit any of Tenant's Agents to cause the use, generation, storage, 
disposal, transportation or release of any Hazardous Materials on, under, in, 
above, to, or from the Project except that which is (i) fully described in 
the Hazardous Materials Questionnaire, (ii) incidental to Tenant's use and 
operation of the Premises, and (iii) in compliance with all applicable Laws.  
Tenant may not use at the Premises Hazardous Materials other than those 
specified in the Hazardous Materials Questionnaire, or in quantities 
different from those specified in the Hazardous

                                      -23-

<PAGE>

Materials Questionnaire, unless Tenant obtains Landlord's prior written 
consent to such new use (which consent shall not be withheld unless Landlord 
reasonably determines that the manner of use of such Hazardous Materials 
poses an unreasonable risk of contamination of the Property) and submits a 
new Hazardous Materials Questionnaire that accurately describes the new use.

                 B.       TENANT'S INDEMNITY.  Tenant shall indemnify, 
defend, protect and hold Landlord harmless from and reimburse Landlord for 
any claims, liabilities, damages, costs, and expenses (including, without 
limitation, attorneys' fees, court costs, and investigation and remediation 
expenses) arising from or related to any breach of Tenant's obligations 
contained in this paragraph 16 or the use, generation, storage, 
transportation, disposal, or release of Hazardous Materials by Tenant or its 
Agents on the Project, including all of the following which may result 
therefrom:  (i) any loss, cost, expense, claim, or liability arising out of 
any investigation, reporting, monitoring, clean-up, containment, removal, 
storage, or restoration work required by any applicable Law, governmental 
agency, or political subdivision or prudent standards of real estate 
ownership and management;(ii) any claims of third parties for loss, injury, 
expense, or damage; and (iii) any loss of rents or income and/or diminution 
in the value of the Property.

                 C.       NOTICES.  Landlord and Tenant shall each give 
written notice to the other as soon as reasonably practicable of (i) any 
communication received from any governmental agency concerning Hazardous 
Materials which relates to the Project or Premises, and (ii) any 
contamination of the Project by Hazardous Materials which constitutes or 
could become a violation of applicable Law or subject the Project to an 
investigation or remediation requirement imposed by Law.

                 D.       TESTING.  Landlord may conduct tests of soils and 
groundwater beneath the Premises and in any other location on the Project, 
including installation of groundwater monitoring wells, to detect the 
presence of Hazardous Materials.  Any such tests or well installation shall 
be done at Landlord's cost in a manner which reasonably minimizes 
interference with Tenant's use and enjoyment of the Premises; provided, 
however, that Tenant shall pay for the costs of any such tests which disclose 
the presence of Hazardous Materials released by Tenant or Tenant's Agents.  
Landlord shall notify Tenant before Landlord installs any monitoring or 
extraction wells or before it commences any groundwater or soil sampling.  No 
testing or sampling of the soil or groundwater of the Project may be done by 
Tenant without Landlord's prior consent.

                 E.       SURVIVAL.  The obligations of Landlord and Tenant 
set forth in paragraph 16 shall survive the expiration or earlier termination 
of the Lease.  Tenant's obligations and liabilities with respect to the 
presence of Hazardous Materials on the Project are limited to the express 
provisions of this paragraph 16.

                 F.       LANDLORD'S REPRESENTATIONS:  Landlord hereby makes 
the following representations and warranties to Tenant, each of which is made 
to the actual knowledge of

                                     -24-

<PAGE>

Landlord's Designated Individuals (hereinafter defined) as of the Effective 
Date, without having made any investigation to verify the accuracy thereof.

                          (1)     Landlord has provided to Tenant prior to 
the Effective Date copies of all reports in Landlord's possession concerning 
the environmental condition of Parcel E and the soil and groundwater in, on, 
and about Parcel E, which reports are described in attached EXHIBIT "F" and 
are hereinafter collectively referred to as the "Parcel E Environmental 
Reports".

                          (2)     Except as otherwise stated in the Parcel E 
Environmental Reports, Parcel E, (including the soil and groundwater on or 
under Parcel E) does not contain Hazardous Materials in material amounts.

                          (3)     Except as otherwise stated in the Parcel E 
Environmental Reports, during the time that Landlord has directly held fee 
title to Parcel E or held an interest in an entity which held fee title to 
Parcel E, Landlord (or such entity in which Landlord held an interest) has 
received no written notice of (i) any violation, or alleged violation, of any 
Law pertaining to Hazardous Materials with respect to Parcel E, (ii) any 
pending claims relating to the presence of Hazardous Materials on Parcel E, 
or (iii) any pending investigation by any governmental agency concerning 
Parcel E relating to Hazardous Materials.

                          (4)     There are no underground storage tanks 
presently existing under Parcel E.

                          (5)     As used above, "Landlord's Designated 
Individuals" shall mean the following people:  (i) James Piane and (ii) Paul 
Radich.

                 G.       LANDLORD'S OBLIGATIONS:  Landlord and Tenant 
acknowledge that the Parcel E Environmental Reports discloses that there 
exists asbestos in the roof sealant of the Building. If and when the roof 
needs repair or replacement, Landlord shall be solely responsible for any 
costs in connection with such repair or replacement to the extent solely 
attributable to the existence of such asbestos and Landlord shall not have a 
right of reimbursement from Tenant for such costs.

         17.     ALTERATIONS.

                 A.       CONSENT REQUIRED.  Except for interior, 
non-structural Alterations costing less than Ten Thousand Dollars ($10,000) 
for each integrated or related work of improvement (not to exceed Thirty 
Thousand Dollars ($30,000) during any twelve (12)-month period) , Tenant 
shall not alter the Premises without the prior written consent of Landlord.


                                     -25-


<PAGE>

                 B.       CONDITIONS.  All work done by or for Tenant in or 
about the Premises (hereinafter called the "Work") shall be done in all cases 
subject to the following conditions, each of which Tenant covenants to 
observe and perform:

                          (1)     No Work involving any structural change and 
no Work involving any Alteration, restoration, or rebuilding costing more 
than Ten Thousand Dollars ($10,000) for each integrated or related work of 
improvement (not to exceed Thirty Thousand Dollars ($30,000) in the aggregate 
during any twelve (12)-month period) shall be undertaken until detailed plans 
and specifications have first been submitted to and approved in writing by 
Landlord, which approval shall not be unreasonably withheld or delayed.  The 
foregoing notwithstanding, if plans and specifications are required in order 
to obtain a building permit for any such Work, Tenant shall furnish a copy 
thereof to Landlord prior to commencement of such Work.

                          (2)     No Work involving a cost, as reasonably 
estimated by Tenant, of more than Fifty Thousand Dollars ($50,000) for each 
integrated or related work of improvement shall be undertaken except under 
the supervision of an architect or engineer approved in writing by Landlord,  
which approval shall not be unreasonably withheld or delayed (unless such 
requirement is waived by Landlord in writing, which waiver shall not be 
unreasonably withheld).

                          (3)     All Work shall be (i) commenced only after 
providing to Landlord not less than five (5) business days prior written 
notice, to allow Landlord sufficient time to post notices of 
non-responsibility, and only after all required governmental permits and 
authorizations have been obtained, (ii) done in a good and workmanlike 
manner, (iii) performed in compliance with all applicable Laws and in 
accordance with the reasonable recommendations of any insurer under any 
policies required by this Lease, and (iv) completed promptly and free of 
liens.

                 C.       PROPERTY OF TENANT.  Except as otherwise provided 
herein, all Alterations, Trade Fixtures and personal property made or 
installed at the Premises by Tenant at its expense shall immediately upon 
completion of installation thereof be and remain the property of Tenant and 
Tenant shall be entitled to all depreciation, amortization and other tax 
benefits with respect thereto.  Except for Alterations which cannot be 
removed without structural injury to the Premises, Tenant may at any time 
during the Lease Term remove such Alterations, Trade Fixtures and personal 
property from the Premises, provided Tenant repairs all damage caused by such 
removal.

         18.     DAMAGE OR DESTRUCTION.

                 A.       LANDLORD'S DUTY TO RESTORE.  If the Premises are 
damaged by any peril after the Effective Date, Landlord shall restore the 
Premises and Common Areas unless the Lease is terminated by Landlord pursuant 
to subparagraph 18.B or by Tenant pursuant to subparagraph 18.C.  All 
insurance proceeds available from the fire and property damage insurance 
carried by Landlord pursuant to subparagraph 11(B) shall be paid to and 
become the property of Landlord.  If this Lease

                                     -26-

<PAGE>

is not so terminated, then upon receipt of the insurance proceeds (if the 
loss is covered by insurance) and the issuance of all necessary governmental 
permits, Landlord shall immediately commence and diligently prosecute to 
completion the restoration of the Premises to their pre-existing condition, 
to the extent then allowed by Law.  Landlord shall act diligently to obtain 
such permits and insurance proceeds as quickly as possible.  Landlord's 
obligation to restore the Premises shall be limited to the Premises and 
Tenant Improvements constructed by Landlord as they existed as of the 
Commencement Date, excluding any of Tenant's Alterations, Trade Fixtures 
and/or personal property constructed or installed by Tenant in the Premises.

                 B.       LANDLORD'S RIGHT TO TERMINATE.  Landlord shall have 
the right to terminate this Lease in the event any of the following occurs, 
which right may be exercised only by delivery to Tenant of a written notice 
of election to terminate within thirty (30) days after the date of such 
damage:

                          (1)     The Building is damaged by an Insured Peril 
to such an extent that the estimated cost to restore exceeds eighty percent 
(80%) of the then actual replacement cost thereof and, at the time of such 
damage, less than three (3) years remains on the Lease Term; provided, 
however, Landlord may not terminate this Lease pursuant to this subparagraph 
if Tenant, at the time of such damage, has a then valid express written 
option to extend the Lease Term and Tenant exercises such option to extend 
the Lease Term within thirty (30) days following receipt of Landlord's notice 
of election to terminate the Lease.  If Landlord elects to terminate this 
Lease pursuant to the provisions of the subparagraph 18.B(1), Landlord shall 
deliver to Tenant together with Landlord's termination notice a written 
estimate of the time Landlord reasonably believes will be required for 
restoration of the Premises and the amount of the deductible portion of the 
loss for which Tenant will be responsible.

                          (2)     The Building is damaged by an Uninsured 
Peril to such an extent that the estimated cost to restore exceeds five 
percent (5%) of the then actual replacement cost thereof; provided, however, 
Landlord may not terminate this Lease pursuant to this subparagraph if within 
thirty (30) days after Landlord has notified Tenant of its election to 
terminate this Lease Tenant (i) pays to Landlord in cash the full amount of 
such excess, or (ii) delivers to Landlord written notice of its agreement to 
pay such excess in monthly progress payments, as costs are incurred during 
the work of restoration, which obligation shall be secured by a letter of 
credit delivered to Landlord at the time of such notice, which letter of 
credit shall be in the amount of such excess and payable to Landlord on sight 
(and shall be in a form and drawn on a bank reasonably satisfactory to 
Landlord).

                          (3)     The Building is damaged by any peril within 
twelve (12) months of the last day of the Lease Term to such an extent that 
the estimated cost to restore equals or exceeds an amount equal to six (6) 
times the Basic Rent then payable; provided, however, that Landlord may not 
terminate this Lease pursuant to this subparagraph if Tenant, at the time of 
such damage, has a then

                                       -27-

<PAGE>

valid express written option to extend the Lease Term and Tenant exercises 
such option to extend the Lease Term within fifteen (15) days following 
Tenant's receipt of Landlord's termination notice.

                          (4)     The Building is damaged by any peril and, 
because of the Laws then in force, the Building cannot be used for the same 
use being made thereof before such damage if restored as required by this 
paragraph.

As used herein, the following terms used in this paragraph 18 shall have the 
following meanings:  (i) the term "Insured Peril" shall mean a peril actually 
insured against for which the insurance proceeds actually received by 
Landlord are sufficient (except for any "deductible" amount specified by such 
insurance) to restore the Building under then-existing building codes to the 
condition existing immediately prior to the damage or would have been insured 
had Landlord complied with its obligations under subparagraph 11.B, above; 
and (ii) the term "Uninsured Peril" shall mean any peril which is not an 
Insured Peril.  Notwithstanding the foregoing, if the "deductible" for any 
insurance carried by Landlord exceeds five percent (5%) of the replacement 
cost of the property insured, the peril covered by such insurance shall be 
deemed to be an "Uninsured Peril".

                 C.       TENANT'S RIGHT TO TERMINATE.  If the Premises are 
damaged by any peril and Landlord does not elect to terminate this Lease or 
is not entitled to terminate this Lease pursuant to the provisions of 
subparagraphs 18(B)(1), (2) (3) or (4), above, then, as soon as reasonably 
practicable, but not later than forty-five (45) days following the date of 
damage or destruction, the parties and their respective architects or 
construction consultants shall meet and attempt to reach agreement on an 
estimate of the time period necessary for Landlord to complete restoration of 
the Premises (which estimated time period is referred to herein as the 
"Estimated Restoration Period").  If within said 45-day period the parties 
are unable to agree on the Estimated Restoration Period, then within ten (10) 
days following the end of said 45-day period Landlord shall select a licensed 
contractor experienced in the construction of buildings similar to the 
Premises for the purpose of establishing the Estimated Restoration Period.  
Tenant shall have the right to approve such contractor.  Upon mutual approval 
of such contractor, Landlord and Tenant shall immediately furnish to such 
contractor plans and specifications for the Building and such other 
information as is necessary for such contractor to determine the Estimated 
Restoration Period.  Within fifteen (15) days following receipt of plans and 
specifications for the Building and such other relevant information as has 
been provided by the parties, such contractor shall determine the Estimated 
Restoration Period and give written notice thereof to the parties.  The 
Estimated Restoration Period as so determined by such contractor shall be 
conclusive and binding upon the parties.  Tenant shall have the right to 
terminate this Lease under any of the following circumstances:

                          (1)     The Premises are damaged by any peril and 
the Estimated Restoration Period extends beyond the two hundred seventieth 
(270th) day after the date of such damage, and Tenant gives written notice of 
termination within seven (7) days following receipt of notice of the 
Estimated Restoration Period.


                                     -28-

<PAGE>

                          (2)     The Premises are damaged by any peril 
within twelve (12) months of the last day of the Lease Term, and (i) the 
Estimated Restoration Period extends beyond the thirtieth (30th) day after 
the date of such damage, (ii) such damage renders unusable more than twenty 
percent (20%) of the Premises, and (iii) Tenant gives written notice of 
termination within seven (7) days following receipt of notice of the 
Estimated Restoration Period.

                 D.       PAYMENT OF DEDUCTIBLES.  If following an event of 
damage or destruction the Lease is not terminated and Landlord proceeds with 
restoration of the Premises, Tenant shall have the following obligations with 
respect to payment of deductibles under Landlord's Property Insurance:

                          (1)     If the Premises are damaged by fire or 
other casualty typically covered under a standard "all risk" policy of 
property insurance, Tenant shall be obligated to pay one hundred percent 
(100%) of the deductible.

                          (2)     If the Premises are damaged by earthquake 
or flood which is covered by earthquake or flood insurance, Tenant shall pay 
to Landlord within thirty (30) days following commencement of the restoration 
work an amount equal to the lesser of (i) one month of Basic Rent at the rate 
then payable hereunder, or (ii) twenty percent (20%) of the deductible 
payable in connection with such casualty, which amount shall be applied 
toward repair of the damage or destruction.  The balance of such deductible, 
up to a maximum of ten percent (10%) of the full replacement cost of the 
Building (less the amount payable by Tenant pursuant to (i), above) shall be 
amortized over the useful life of the improvements to be restored with 
interest on the unamortized balance at the then prevailing market rate 
Landlord would pay if it borrowed funds on a non-secured basis to construct 
such improvements from an institutional lender, and Tenant shall pay to 
Landlord each month as Additional Rent that portion of such amortized amount 
as is applicable to such month.

                 E.       ABATEMENT OF RENT.  In the event of damage to the 
Premises which does not result in the termination of this Lease, the Basic 
Rent and the Additional Rent shall be temporarily abated during the period of 
restoration in proportion to the degree to which Tenant's use of the Premises 
is impaired by such damage.  Tenant shall not be entitled to any compensation 
or damages from Landlord for loss of Tenant's business or property or for any 
inconvenience or annoyance caused by such damage or restoration.

                 F.       WAIVER.  Tenant hereby waives California Civil Code 
Sections 1932, 1933, 1941 and 1942, and the provisions of any other law now 
or hereafter in effect that would give Tenant the right to terminate this 
Lease or relieve Tenant of its obligation to pay rent under this Lease, 
except to the extent expressly provided herein.

                                    -29-

<PAGE>

         19.     CONDEMNATION.

                 A.       TENANT'S RIGHT OF TERMINATION.  If the Premises or 
any portion thereof are taken under the power of eminent domain (hereinafter 
referred to as "Condemnation"), this Lease shall terminate as to the part so 
taken as of the date the condemning authority takes title or possession, 
whichever occurs first.  If more than twenty percent (20%) of the Gross 
Leasable Area of the Building is taken by Condemnation, or there is a taking 
affecting the Common Area and, as a result of such taking, Landlord cannot 
provide parking spaces within the Project equal in number to at least ninety 
percent (90%) of Tenant's Allocated Parking Stalls, as specified in 
subparagraph 3(S), above, and as a result thereof the Premises are unsuitable 
for Tenant's use (in Tenant's reasonable opinion), then at Tenant's option, 
exercisable only in writing and within thirty (30) days after Landlord shall 
have given Tenant written notice of such taking (or, in the absence of such 
notice, within thirty (30) days after the condemning authority shall have 
taken possession), Tenant may terminate this Lease as of the date the 
condemning authority takes possession.  If Tenant does not terminate this 
Lease in accordance with the foregoing, this Lease shall remain in full force 
and effect as to the portion of the Premises remaining, except that the Basic 
Rent shall be reduced as follows:  (i) if only a portion of the Building, and 
no portion of the Common Areas, is taken, the Basic Rent shall be reduced in 
the proportion that the Gross Leasable Area of the portions of the Building 
so taken bears to the total Gross Leasable Area of the Building; or (ii) if 
only portions of the Common Areas are taken, or if both portions of the 
Common Areas and Building are taken, the Basic Rent shall be reduced in 
proportion to the reduction in fair rental value of the Premises following 
such condemnation. If the parties are unable to agree as to the amount of 
abatement, within forty-five (45) days after the condemnation, the matter 
shall be submitted to binding arbitration under the rules of the American 
Arbitration Association.

                 B.       CONDEMNATION AWARD.  Landlord shall be entitled to 
any award paid if the Premises are wholly or partially condemned, except that 
Tenant shall be entitled to receive from either the condemning authority or 
Landlord, as applicable, the following:  (i) the then unamortized cost of any 
Alterations or Tenant Improvements paid for by Tenant; (ii) the value of 
Tenant's Trade Fixtures; (iii) Tenant's loss of goodwill; (iv) Tenant's 
relocation costs; and (v) Tenant's loss of business and business interruption.

                 C.       RESTORATION.  If less than the entire Premises 
shall be taken by Condemnation, and this Lease is not terminated pursuant to 
subparagraph A above, Landlord shall promptly restore that portion of the 
Building and Common Areas not so taken to a complete architectural unit to 
the extent of condemnation proceeds received by Landlord to which Landlord is 
entitled pursuant to the terms hereof.

         20.     MECHANIC'S LIENS.  Tenant shall not suffer or permit any 
mechanics' or other liens (or claims thereof) to be filed against the 
Premises or Tenant's leasehold interest therein or hereunder by reason of 
work, labor, services, or materials supplied or claimed to have been supplied 
to Tenant or

                                     -30-

<PAGE>

anyone holding the Premises or any part thereof through or under Tenant.  
Landlord shall have the right at all reasonable times to post and keep posted 
on the Premises any notices that Landlord may deem necessary or advisable for 
the protection of Landlord and the Premises from mechanics' liens.  If any 
such liens (or claims thereof) shall at any time be filed against the 
Premises, Tenant shall cause the same to be discharged of record within 
forty-five (45) days after the date of filing.

         21.     FINANCIAL STATEMENTS.  Upon the request of Landlord, Tenant 
shall provide to Landlord from time to time (but no more than twice in any 
calendar year), at no expense to Landlord, copies of all financial statements 
filed by Tenant with the United States Securities and Exchange Commission 
(the "SEC") during such calendar year or the preceding calendar year or, if 
Tenant is not obligated to file financial statements with the SEC, copies of 
fiscal quarterly and annual balance sheets and income statements prepared by 
or for Tenant which financial statements shall be either audited or certified 
by Tenant's chief financial officer.

         22.     LANDLORD'S ENTRY.  Tenant agrees to permit Landlord and its 
Agents to enter the Premises upon written notice reasonably in advance 
(except in case of emergency where no prior notice shall be required) with 
reasonable frequency during usual business hours, or at any other time in 
case of emergency, (i) to inspect the Premises and, if Landlord so desires, 
but without implying any obligation of Landlord to do so, to make any repairs 
deemed necessary or desirable by Landlord and to perform any work in the 
Premises deemed necessary by Landlord to comply with any Laws or the 
recommendations of any insurer, and (ii) during the final nine (9) months of 
the Lease Term, for the purpose of showing the Premises to prospective 
tenants.  Landlord may display on the Premises usual "For Lease" and/or "For 
Sale" signs during the final six (6) months of the Lease Term, provided that 
no such signs block visibility of Tenant's signs.  By exercising the 
foregoing rights, Landlord shall not unreasonably interfere with Tenant's use 
of the Premises and shall use reasonable efforts to minimize any necessary 
interference.

         23.     ASSIGNMENT AND SUBLETTING.

                 A.       Tenant shall not, without the prior consent of 
Landlord, which consent shall not be unreasonably withheld or delayed by 
Landlord, transfer, assign or hypothecate this Lease or any interest herein, 
sublet the Premises or any part thereof, or permit the use of the Premises by 
any party other than Tenant.  This Lease shall not, nor shall any interest 
herein, be assignable as to the interest of Tenant by operation of law 
without the consent of Landlord, which consent shall not be unreasonably 
withheld.  Any of the foregoing acts without such consent shall be void and 
shall, at the option of Landlord, terminate this Lease.

                 B.       If the Tenant is a privately held corporation, or 
is an unincorporated association or partnership, the transfer (except 
pursuant to a public offering), assignment, or hypothecation of any stock or 
interest in such corporation, association, or partnership resulting in one 
entity or a group of affiliated entities obtaining in excess of fifty percent 
(50%) (in the aggregate) of

                                     -31-

<PAGE>

the voting shares of stock or interest in such corporation, association or 
partnership ("Stock Transfer") shall be deemed an assignment or transfer 
within the meaning and provisions of this paragraph.  Notwithstanding 
anything to the contrary in this subparagraph 23.B, in no event shall the 
public offering or trading of stock in Tenant over a public exchange 
(including the transfer of fifty percent (50%) or more of the outstanding 
stock in Tenant) be deemed an assignment or transfer within the meaning of 
this paragraph.

                 C.       Without limiting the other instances in which it 
may be reasonable for Landlord to withhold its consent to an assignment or 
subletting, Landlord and Tenant acknowledge that it shall be reasonable for 
Landlord to withhold its consent in the following instances:

                          (1)     if at the time consent is requested or at 
any time prior to the granting of consent, Tenant is in material default 
under this Lease or would be in default under this Lease but for the pendency 
of any grace or cure period specified in this Lease;

                          (2)     if the proposed assignee or sublessee is a 
governmental agency;

                          (3)     if, in Landlord's reasonable judgment, the 
use of the Premises by the proposed assignee or sublessee would involve 
occupancy in violation of this Lease; or

                          (4)     if, in Landlord's reasonable judgment, the 
financial worth of the proposed assignee or sublessee does not meet the 
current credit standards applied by Landlord or its investment advisors for a 
new tenant of the Premises.

                 D.       Tenant shall give Landlord at least fifteen (15) 
days prior written notice of any proposed assignment or sublease 
("Transfer"), which notice shall be accompanied by the following information 
and documentation:  (i) the name and legal composition of the proposed 
transferee; (ii) a current financial statement of the transferee, financial 
statements of the transferee covering the preceding three (3) years if the 
same exist, and (if available) an audited financial statement of the 
transferee for a period ending not more than one year prior to the proposed 
effective date of the Transfer; (iii) the nature of the proposed transferee's 
business to be conducted in the Premises; (iv) all consideration to be given 
on account of the Transfer; (v) a current financial statement of Tenant 
(subject, however, to the limitations of paragraph 21 hereof); (vi) the form 
of sublease or assignment and all other agreements evidencing the transfer; 
(vii) an environmental questionnaire in the form attached as EXHIBIT "E", 
completed and signed by the proposed transferee; and (viii) such other 
informa-tion as may be reasonably requested by Landlord.  Tenant's notice 
shall not be deemed to have been served or given until such time as Tenant 
has provided Landlord with all information reasonably requested by Landlord 
pursuant to this subparagraph D.  Tenant shall immediately notify Landlord of 
any modification to the proposed terms of such Transfer.  Within five (5) 
business days following receipt of Tenant's written request for approval of a 
Transfer, Landlord shall notify Tenant in writing if the documentation 
accompanying such request does not satisfy all of the requirements of this 

                                     -32-

<PAGE>

paragraph, and Landlord's failure to do so shall be deemed its acceptance as 
complete the notification of Transfer and documentation provided by Tenant.  
Within ten (10) business days following receipt of Tenant's request and 
complete documentation satisfying the requirements of this paragraph, 
Landlord shall notify Tenant in writing of its approval or disapproval of the 
proposed Transfer.  If Landlord disapproves the proposed Transfer, Landlord 
shall specify in its notice its reasons for disapproval.  If Landlord 
approves such Transfer, or fails to respond within said ten (10) business day 
period, Tenant shall be free for a period of one hundred twenty (120) days 
after the end of said ten (10) business day period to assign its entire 
interest in this Lease or to sublet such space to the entity specified in 
Tenant's original request upon the terms set forth therein. 

                 E.       Notwithstanding the provisions of subparagraphs 
23.A and B, above, and provided that Tenant is not in material breach of the 
Lease and no uncured default of Tenant under the Lease then exists, Tenant 
may, with prior notice to Landlord but without Landlord's prior consent, 
assign this Lease or sublet the Premises to any corporation which controls, 
is controlled by or is under common control with Tenant by means of an 
ownership of one hundred percent (100%) of the outstanding voting shares of 
stock.  In the case of any such assignment or sublease not requiring 
Landlord's prior consent, Tenant shall nevertheless notify Landlord in 
writing, not less than ten (10) days prior to the effective date of such 
assignment or sublease, of the nature and purpose of such assignment or 
sublease and the identity of the proposed assignee or subtenant and the 
address and telephone number of its principal office.  As to any assignment 
or sublease described above, Tenant shall provide Landlord, upon request, 
with such additional information pertaining to the business purpose and 
nature of such assignment or sublease as Landlord may reasonably require to 
verify compliance with the terms of this Lease, and Tenant shall cooperate in 
good faith with Landlord in addressing and/or answering any reasonable 
questions or concerns Landlord may have pertaining to the proposed assignment 
or sublease.

                 F.       Except to the extent provided to the contrary 
pursuant to subparagraph 23.F hereof, no sublessee shall have a right further 
to sublet without Landlord's prior consent, and any assignment by a sublessee 
of its sublease shall be subject to Landlord's prior consent in the same 
manner as if Tenant were entering into a new sublease.  No sublease, once 
consented to by Landlord, shall be modified or terminated by Tenant without 
Landlord's prior consent, which consent shall not be unreasonably withheld.

                 G.       In the event of any assignment or sublease, Tenant 
shall pay to Landlord, within ten (10) days following receipt by Tenant, 
fifty percent (50%) of any rent or other consideration received by Tenant 
from an assignee or subtenant after first deducting out for Tenant's account: 
 (i) all sums payable by Tenant under this Lease (ii) broker's commissions 
payable by Tenant with regard to the transfer; (iii) reasonable legal fees; 
and (iv) the cost of improvements made to the portion of the Premises subject 
to the transfer by Tenant at Tenant's expense for the purpose of the transfer.


                                     -33-

<PAGE>

                 H.       Regardless of Landlord's consent, no subletting or 
assignment shall release Tenant of Tenant's obligation or alter the primary 
liability of Tenant to pay the rent and to perform all other obligations to 
be performed by Tenant hereunder.  The acceptance of rent by Landlord from 
any other person shall not be deemed to be a waiver by Landlord of any 
provision hereof. Consent to one assignment or subletting shall not be deemed 
consent to any subsequent assignment or subletting.  In the event of default 
by any assignee of Tenant or any successor of Tenant in the performance of 
any of the terms hereof, Landlord may proceed directly against Tenant without 
the necessity of exhausting remedies against such assignee or successor.  
Landlord may consent to subsequent assignments or subletting of this Lease or 
amendments or modifications to this Lease with assignees of Tenant, with 
Tenant's prior written consent thereto, and such action shall not relieve 
Tenant of liability under this Lease.

         24.     SUBORDINATION.  At Landlord's option, this L