Rational Developer for System z
PL/I for Windows, Version 8.0, Programming Guide

INCLUDE

The INCLUDE environment variable specifies the secondary input directory search path for include files identified by %INCLUDE statements in your source program. For example:

  set include=c:\pli\program

These directories are searched after any specified in the IBM.SYSLIB environment variable.

Rational Developer for System z
PL/I for Windows, Version 8.0, Programming Guide