Operation Manual

Chapter 18: Memory and Variable Management 328
To cancel Clear Entries, press ‘.
Note: If you select
3:Clear Entries from within a program, the Clear Entries instruction is pasted to the
program editor, and the Entry (last entry) is cleared when the program is executed.
ClrAllLists
ClrAllLists sets the dimension of each list in RAM to 0.
To clear all elements from all lists, follow these steps.
1. Press y L to display the
MEMORY menu.
2. Select
4:ClrAllLists to paste the instruction to the home screen.
3. Press Í to set the dimension of each list in memory to 0.
To cancel
ClrAllLists, press ‘.
ClrAllLists does not delete list names from memory, from the LIST NAMES menu, or from the stat list
editor.
Note: If you select
4:ClrAllLists from within a program, the ClrAllLists instruction is pasted to the
program editor. The lists are cleared when the program is executed.
Archiving and UnArchiving Variables
Archiving and UnArchiving Variables
Archiving lets you store data, programs, or other variables to the user data archive (ARC) where they
cannot be edited or deleted inadvertently. Archiving also allows you to free up RAM for variables that
may require additional memory.
Archived variables cannot be edited or executed. They can only be seen and unarchived. For example, if
you archive list
L1, you will see that L1 exists in memory but if you select it and paste the name L1 to
the home screen, you won’t be able to see its contents or edit it.
Note: Not all variables may be archived. Not all archived variables may be unarchived. For example,
system variables including r, t, x, y, and q cannot be archived. Apps and Groups always exist in Flash
ROM so there is no need to archive them. Groups cannot be unarchived. However, you can ungroup or
delete them.
Variable Type Names
Archive?
(yes/no)
UnArchive?
(yes/no)
Real numbers
A, B, ... , Z yes yes
Complex
numbers
A, B, ... , Z yes yes
Matrices
[A], [B], [C], ... , [J]
yes yes
Lists
L1, L2, L3, L4, L5, L6,
and user-defined
names
yes yes
Programs yes yes
Functions
Y1, Y2, . . . , Y9, Y0 no not
applicable
Parametric
equations
X1T and Y1T, ... , X6T
and
Y6T
no not
applicable