Explanations of commands
To receive a list of all the TSO/E commands in the SYS1.HELP data
set along with a description of each, enter the HELP command as follows:
help
You can place information about installation-written commands in
the SYS1.HELP data set. You can also get all the information available
about a specific command in SYS1.HELP by entering the specific command
name as an operand on the HELP command, as follows:
help ALLOCATE
where
ALLOCATE is the command name.