--- os2sdk/demos/examples/sleep/sleep.c	2018/08/09 12:25:13	1.1
+++ os2sdk/demos/examples/sleep/sleep.c	2018/08/09 12:26:20	1.1.1.2
@@ -1,5 +1,5 @@
 /*
- * Example of DOSSLEEP usage
+ * Example of DosSleep usage
  *
  * This call suspends the execution, of the process or thread which issues
  * the call, for the specified abount of time.  Other processes and threads
@@ -10,27 +10,28 @@
  *
  * Compile as: cl -AL -Lp -G0 sleep.c
  *
- * Copyright (C) Microsoft Corp. 1986
+ * Created by Microsoft Corp. 1986
  */
 
-#include  <doscalls.h>
+#define INCL_DOSPROCESS
 
-extern long atol();
+#include <os2def.h>
+#include <bsedos.h>
 
 main(argc, argv)
 int argc;
 char *argv[];
 {
-	unsigned long TimeInterval;       /* Number of milliseconds to delay */
+	ULONG TimeInterval;	  /* Number of milliseconds to delay */
 
 	if(argc > 1)
 		TimeInterval = atol(argv[1]);	/* user specified delay */
 	else
-		TimeInterval = (long)2000;	/* default 2 seconds */
+		TimeInterval = 2000L;	   /* default 2 seconds */
 
 	printf("Sleeping for %ld milliseconds.\n", TimeInterval);
 
-	DOSSLEEP(TimeInterval);
+	DosSleep(TimeInterval);
 
 	printf("Sleep completed.\n");
 }