From: Gustavo Portales on
Do you remember this topic?
http://groups.google.com/group/comp.sys.hp48/browse_thread/thread/8da6efadf9b44310/

if you need a translation:
http://hpcalc.gaak.org/?id=vid&w=GWV2tRgVWLY
or:
http://foro.gaak.org/viewtopic.php?f=7&t=37

Cheers,
- Gaak -