In some places this works, and other places it doesn't.
In "C:\Program Files\SlickEdit Pro 21.0.0 Beta1\macros\cbrowser.e"
It shows the function definition and possible argument values and the comment header before the current function add_members_in_category()
In "C:\Program Files\SlickEdit Pro 21.0.0 Beta1\macros\tbfilelist.e"
It shows the function definition and possible argument values.
In "C:\Program Files\SlickEdit Pro 21.0.0 Beta1\macros\builtins.e"
It works as expected - but this is where the function is defined.
/**
* Display function help window showing prototype for current function
* being called, highlighting the current parameter.
* This command is normally bound to Alt+Comma
*
* @see _do_function_help
*/
_command void function_argument_help() name_info(','VSARG2_REQUIRES_EDITORCTL|VSARG2_READ_ONLY|VSARG2_REQUIRES_PRO_EDITION)