--- pmsdk/include/os2.h	2018/08/09 12:28:13	1.1.1.1
+++ pmsdk/include/os2.h	2018/08/09 12:28:36	1.1.1.2
@@ -5,9 +5,13 @@
 * This is the top level include file that includes all the files necessary
 * for writing an OS/2 application.
 *
-* Copyright (c) 1987  Microsoft Corporation
-* Copyright (c) 1987  IBM Corporation
+* Copyright (c) 1987,1989  Microsoft Corporation
 *
+* ===========================================================================
+*
+* The following symbol is used in this file for conditional sections.
+*
+*   INCL_NOPM               -  NONE of OS/2 Presentation Manager
 \***************************************************************************/
  
 #define OS2_INCLUDED
@@ -21,5 +25,7 @@
 #include <bse.h>
  
 /* OS/2 Presentation Manager Include File */
- 
+
+#ifndef INCL_NOPM
 #include <pm.h>
+#endif /* !INCL_NOPM */