(Comp.sys.handhelds) Option: 
Item: 3443 by blair at en.ecn.purdue.edu
Author: [Marc E Blair]
  Subj: hidden variable utility for HP48
  Date: Thu Jun 13 1991

[Note!  See FPGDIR.DOC on this disk for vital related info.  -jkh-]

Hello everyone! This program is designed so users
can enjoy the added feature of hidden variables without 
accidently causing "Try to recover memory?" errors. Here is a description of
what each program does:

NORMAL - restores a directory to its natural state, i.e. no
         hidden variables

HIDE   - takes an argument from level one, a variable name or list,
         and hides it. 

ALL    - returns a list of all variables, including the '' variable and
         others hidden behind it.

HIDEN  - returns a list of only hidden variables.

NULL   - creates '' on the stack 

SPACE  - creates ' ' on the stack (I use it to create directories with no
         name - I set up my home menu to have only a no-name directory,
         and then use my no-name directory as my home diectory. This way
         I can hide "personalized commands" and other variables (like PRTPAR) 
         since no variables may be hidden in the home directory
         (due to system use))

DELIT  - takes a list from level 2 and an object from level one and deletes
         that object in the list if it exists. Used by HIDE program 

KEYS   - redefines user keys for PURGE and CLVAR so one does not accidently
         delete a non-empty directory that looks empty.

DISCLAIMER: I am not repsonsible for memory problems that may result
from cosmic rays while you are using this program or anything else.

enjoy!

Marc Blair

blair@en.ecn.purdue.edu         "The HP48: But, can it cook?"