--- doc/sh-utils.texi~	Wed Oct 18 20:42:42 2000
+++ doc/sh-utils.texi	Thu Apr 18 23:00:32 2002
@@ -586,7 +586,9 @@
 @item -x @var{file}
 @opindex -x
 @cindex executable file check
-True if @var{file} exists and is executable.
+True if @var{file} exists and is executable. On MSDOS systems, checking
+for a file automatically checks for the standard executable file
+extentions, such as .exe.
 
 @item -O @var{file}
 @opindex -O
