diff -r 4bc1d9f9d73c -r bb1c11adb2db tool/cmd_master.cpp
--- a/tool/cmd_master.cpp	Tue Jul 22 15:23:42 2008 +0000
+++ b/tool/cmd_master.cpp	Tue Jul 22 15:24:46 2008 +0000
@@ -15,8 +15,10 @@
 const char *help_master =
     "[OPTIONS]\n"
     "\n"
+    "Show master and Ethernet device information.\n"
     "\n"
-    "Command-specific options:\n";
+    "Command-specific options:\n"
+    "  --master  -m <master>  Index of the master to use. Default: 0\n";
 
 /****************************************************************************/