--- rpl/README	2010/09/07 20:59:04	1.14
+++ rpl/README	2010/09/08 17:18:36	1.15
@@ -56,6 +56,16 @@ flags.
 	- OS/2 and eComStation with EMX (>= 0.9d). You probably have to
 		recreate configure script and makefiles with aclocal, autoconf and
 		automake.
+		========================================================================
+		WARNING : eCS DEFINES TMP VARIABLE THAT OVERWRITES PATHS
+		IN FOPEN() SYSTEM CALL. /TMP/xxx IS REPLACED BY /%TMP%/xxx.
+		THIS BUG ONLY OCCURS WHEN RPL/2 IS CALLED FROM OS/2 OR 4OS2 SHELL.
+		WORKAROUND : DEFINE RPL_TMP_PATH WITH A DRIVE LETTER LIKE
+
+			SET RPL_TMP_PATH=C:/tmp
+
+		OR CALL RPL/2 FROM A BOURNE SHELL.
+		========================================================================
 	- Mac OS X.
 
   * RPL/2 should run on :