ALIASES: ALIASES option

The ALIASES option requests directory entries be created for defined symbols in a module so that those names can be used to resolve references during autocall. Because the aliases are only used for symbol resolution and are not executable, they are called "hidden" aliases. You can code the ALIASES option in the PARM field as follows:

ALIASES={NO | ALL}

Note:

Hidden aliases will not be created if NO is specified, or if the ALIASES option value is defaulted. Note that the creation of hidden aliases is also dependent on the processing level of the binder. Be sure that the COMPAT processing option is at least PM3 for the ALIASES option to take effect.
This processing option is intended to enable standard system support for symbol resolution similar to that provided by C370LIB object libraries.
The DESERV macro has a HIDE parameter that can be used by an application program to control whether hidden aliases are returned on a GET_ALL request. See the DESERV macro in z/OS DFSMS Macro Instructions for Data Sets