When working through the manual of my newly acquired HP-41 I found it a bit strange that one can list all available functions via CATALOG but seemingly cannot select them (e.g. by pressing ENTER) from within the CATALOG (which would seem straightforward and less tedious than ALPHA "function name" etc. to me).
Did I miss something or, if not, does anyone - maybe with HP roots - have an idea why it was designed to "show only".