Technically, "ashref" is a CLI command, but it's one of particular use for ASH scripting.
Entering "ashref" into the CLI with no parameters will display a list of all available ASH scripting functions.
Entering "ashref [string]" with a partial command name in place of "[string]" will display all commands matching the partial command name entered.
Note that calling ashref with a datatype as your parameter will return functions taking that datatype as a parameter, but the return type is ignored. For example, "ashref string" would list the function user_confirm( string ) (which returns a boolean), but not the function to_url( location ) (which returns a string).