Purpose. The purpose of a comprehensive sign program is to integrate all of a nonresidential project's signs with the overall site design and the structures' design into a unified architectural statement. A comprehensive sign program provides a means for the flexible application of sign regulations in order to provide incentive and latitude in the design and display of multiple signs and to achieve, not circumvent, the purpose of this chapter. Approval of a comprehensive sign program may modify the standards provided in this chapter as to sign number, size, height, illumination, location, orientation, or other aspects of signs within the limits of this section.