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.