diff --git a/xCAT-client/pods/man1/rinv.1.pod b/xCAT-client/pods/man1/rinv.1.pod
index 5c2aa63d6..ed7191790 100644
--- a/xCAT-client/pods/man1/rinv.1.pod
+++ b/xCAT-client/pods/man1/rinv.1.pod
@@ -112,15 +112,15 @@ Diagnostics information of firmware.
 
 =item B<mprom>
 
-?
+Retrieves mprom firmware level
 
 =item B<deviceid>
 
-?
+Retrieves device identification. Usually device, manufacturing and product ids. 
 
 =item B<guid>
 
-?
+Retrieves the global unique identifier 
 
 =item B<all>