Jake-S@cup.portal.com (Jake G Schwartz) (09/21/90)
Someone asked how to turn the menu line of the HP48 LCD off. The only
way that I know is to assign blank GROBs to custom menu keys. It isn't
a well-known fact, but you CAN have a custom menu key be labelled with
a 21 by 8 size GROB. It must be exactly 21 by 8 or the CST object wont
be accepted as a valid entity when the CST key is hit. Simply assign
some benign function to each of the keys and you'll have it. For
instance, if you were to assign SIN to the first key in the custom
menu, with a blank GROB as its label, the CST object would be
{ { GROB 21 8 0 SIN } }
Simply type this in and store it as the 'CST' object. Then when you hit
the CST key you'll see that the first key position has been turned off.
Repeat the inner list six times in the CST list and the entire menu row
will become blank. Of course, you cannot do anything with it after
that, such as using DISP, since DISP will not accept 8 as meaning the
8th row of the display, but at least you can clear the line.
Jake Schwartz