Program addresses and program pointers

The term program address describes the address of an entry point of the program. It is addressed by means of a program address identifier. A program address identifier must not be used as a receiving operand.

A program pointer is an elementary item in which a program address can be stored.

A program pointer can be used to call a program. Program address identifiers and program pointers can be passed to other source units, and program pointers can also be returned from other source units.