LINKAGE TYPE Phrase

The LINKAGE TYPE phrase is used to specify the type of program that the procedure-pointer data item is set to. It could be set to the address of a separately compiled program object (*PGM) or a procedure within a program.
environment-name-1
The type of program that procedure-pointer-data-item-1 will be set to. Environment-name-1 can be defined as:
  • PGM (a program object, or *PGM)
  • PRC (a procedure)
PROGRAM
Procedure-pointer-data-item-1 is set to a program object (*PGM).
PROCEDURE
Procedure-pointer-data-item-1 is set to a procedure.
NULL(S)
Sets the receiving field to contain the value of an invalid address.