Example:

          GTM>zhelp "func $data"
        

This lists the help for function $DATA, which is a subtopic of functions topic.

Example:

          GTM>ZHELP "lexical":"SYS$HELP:HELPLIB"
        

This uses ZHELP to invoke the standard VMS help library, looking up the topic "lexical" in that library.

Example:

       $ DEFINE GTM$HELP LAB:[TEST]
       $ GTM
       GTM>ZHELP "":"APPL.HLB"
        

This uses the DCL command DEFINE to point GTM$HELP to a user help library directory. The ZHELP command then invokes the base level help in the library APPL.HLB.