This excerpt taken from the GENZ 10-K filed Mar 10, 2006.
Landlord hereby leases and demises to Tenant and Tenant hereby leases from Landlord, subject to and with the benefit of the terms, covenants, conditions and provisions of this Lease, the Premises. Tenant shall have, as appurtenant to the Premises, the right to use in common with others, if any, entitled thereto (i) the common areas and common facilities, if any, included in the Building, on the Lot or in the Complex, (ii) the building service fixtures and equipment serving the Premises, and (iii) subject to Section 10.14 hereof, (a) the right to use that number of nonreserved parking spaces determined by dividing the Rentable Square Footage (as the same shall be determined pursuant to Section 2.3 hereof and as the same may be increased pursuant to Section 10.11 hereof) by 500 ("Tenant's Parking Spaces") in the underground parking garage located south of Kendall Street as shown on Exhibit A hereto (the "Garage") and (b) the right to use that number of nonreserved Valet Parking Spaces, as such term is defined and such number is determined pursuant to Section 10.14 hereof. To the extent that the Premises includes all of the rentable square footage on a particular floor of the Building, Tenant shall have exclusive use of the common areas on such floors, but Landlord shall have the rights set forth in the next paragraph hereof.
Landlord reserves the right from time to time, without unreasonable interference with Tenant's use, (a) to install, repair, replace, use, maintain and relocate for service to the Premises and to other parts of the Building, or either, building service fixtures and equipment wherever located in the Building, including the perimeter walls of the Premises, on the roof of the Building, in mechanical penthouses and in any space in or adjacent to the Premises used for shafts, stacks, pipes, conduits, wires and appurtenant fixtures, ducts, electric or other utilities, telecommunications equipment or other Building facilities, as well as the right of access (which right of access shall be at reasonable times and upon reasonable notice, except in the case of emergency) through the Premises for the purpose of operation, maintenance and repair, provided, however, that the Annual Fixed Rent, Additional Rent (as defined in Section 4.2 hereof) and other charges payable hereunder by Tenant shall be proportionally reduced in the event that any such installation or relocation of service materially reduces the usable floor area of the Premises (other than a temporary reduction to accommodate installation, repair, replacement, maintenance and relocation of such service); notwithstanding the foregoing provisions of this clause (a), to the extent that the Premises include all of the rentable square footage on a particular floor of the Building, Landlord's right to install, repair, replace, use, maintain and relocate such building service fixtures and equipment on such floor of the Building shall be limited to placing or installing such building service fixtures and equipment in shafts, pipes, stacks, conduits, chases and risers located within the central core common area of such floor or in such other locations on such floor as may be set forth in the Final Design Documents; (b) to construct, alter or relocate any Building Common Areas and/or Complex Common Areas (provided that, except for any construction, alteration or relocation of Complex Common Areas required or permitted by the Development Approvals or Subsequent Approvals, no such construction, alteration or relocation of any such Complex Common Areas shall substantially or materially increase any payments due from Tenant under this Lease and any such construction, alteration or relocation shall be substantially similar in quality and utility to Complex Common Areas being altered or relocated or substantially similar to common areas of first-class, mixed use projects in the Relevant Market); and (c) after construction of the Building to construct, alter or relocate any Building Common Areas, subject to approval by Tenant, such approval not to be unreasonably withheld, delayed or conditioned.