7bae3a351791fc73cb45d7f3e305e6e09f2fea29
hiram
  Wed Jan 29 13:59:28 2014 -0800
mention stdin,stdout,stderr for kent command arguments, the first time ever in any README in the source tree refs #9149
diff --git src/userApps/README src/userApps/README
index 55f4e20..f5fc5a8 100644
--- src/userApps/README
+++ src/userApps/README
@@ -114,30 +114,36 @@
    for more information.  The usage messages from each command will help
    with the setup.
 
 ========================================================================
 
 Documentation:
 
 Each 'kent' command contains its own documentation.  Simply run the
 commands without any arguments to see the usage message for operating
 instructions.
 
 When the utilities are built here, their usage messages have
 been collected together in one file:
 	kentUtils.Documentation.txt
 
+Please note: kent commands use the special keywords:
+   'stdin', 'stdout' and 'stderr' in place of input or output file name
+   arguments.  This is unlike the default unix command line behavior
+   of having 'stdin' and 'stdout' as default input and output arguments
+   without mention.
+
 ========================================================================
 
 MySQL database access:
 
 Many of the commands can use the UCSC public MySQL server, or
 your own local MySQL server with UCSC data formats.  Add these three
 lines to a file in your HOME directory called '.hg.conf' and set
 its permissions to: 'chmod 600 .hg.conf'
 
     db.host=genome-mysql.cse.ucsc.edu
     db.user=genomep
     db.password=password
     central.db=hgcentral
 
 This '.hg.conf' file is used by the kent commands to determine the