diff -r a0982873d655 -r a73c0f54be42 tool/cmd_master.cpp
--- a/tool/cmd_master.cpp	Wed Jul 23 08:06:10 2008 +0000
+++ b/tool/cmd_master.cpp	Wed Jul 23 16:16:30 2008 +0000
@@ -18,7 +18,10 @@
     "Show master and Ethernet device information.\n"
     "\n"
     "Command-specific options:\n"
-    "  --master  -m <master>  Index of the master to use. Default: 0\n";
+    "  --master -m <index>  Index of the master to use. Default: 0.\n"
+    "\n"
+    "Numerical values can be specified either with decimal (no prefix),\n"
+    "octal (prefix '0') or hexadecimal (prefix '0x') base.\n";
 
 /****************************************************************************/