HP 50g Graphing Calculator - Manual (Page 121)

Page 2-61
Notice that variable A12 is no longer there. If you now press „§, the
screen will show the contents of sub-directory MANS, including variable A12:
Deleting variables
Variables can be deleted using function PURGE. This function can be accessed
directly by using the TOOLS menu (I), or by using the FILES menu
„¡
@@OK@@ .
Using the FILES command
The FILES command can be used to purge one variable at a time. To delete a
variable from a given directory you can use the FILES menu. For example, within
the sub-directory {HOME MANS INTRO}, we have variables p1, z1, R, Q,
α ,
and A left. Suppose that we delete variable A. Here is how to do it: Press
„¡
@@OK@@ to produce the variable list. Use the down-arrow key ˜ to
select variable A (the last in the list), then press L @PURGE@ @@@YES@@@. The screen
will now show the contents of sub-directory INTRO without variable A.
Using function PURGE in the stack in Algebraic mode
We start again at subdirectory {HOME MANS INTRO} containing now only
variables p1, z1, Q, R, and
α . We will use command PURGE to delete
Note: You can use the stack to move a variable by combining copying with
deleting a variable. Procedures for deleting variables are demonstrated in
the next section.