The TSO abbreviation convention applies for all DFSMShsm user commands and parameters. In other words, when you want to abbreviate the DFSMShsm commands and parameters, you must specify enough of the leading characters so that the abbreviation is distinguishable from all the other commands and parameters.

In addition, some DFSMShsm keyword parameters allow unique abbreviations. This publication lists all unique abbreviations of a parameter under the heading "Abbreviations."