This part effectuates section 119 of the Rehabilitation, Comprehensive Services, and Developmental Disabilities Amendments of 1978, which amended section 504 of the Rehabilitation Act of 1973 to prohibit discrimination on the basis of handicap in programs or activities conducted by Executive agencies or the United States Postal Service. This part also implements section 508 of the Rehabilitation Act of 1973, as amended, with respect to the accessibility of electronic and information technology developed, procured, maintained, or used by the agency.