Displaying information about variables on the – Texas Instruments TITANIUM TI-89 User Manual

Page 694

Memory and Variable Management

694

Displaying Information about Variables on the

Home Screen

From the Home screen, you can display information about variables without opening the
VAR-LINK screen.

•

To determine if a variable with a given name exists in the system table, Enter the

IsVar()

function on the Home screen.

•

To determine if a variable is archived, use the

IsArchiv()

function.

IsArchiv

(var_name)

•

To determine if a variable is locked, use the

IsLocked()

function.

IsLocked

(var_name)

Manipulating Variables and Folders with VAR-LINK

On the

VAR-LINK

screen, you can show the contents of a variable. You can also select

one or more listed items and manipulate them by using the operations in this section.

Return to the current application without pasting the
highlighted name.

Press:

To:

IsVar is a function, which requires you to
enclose the variable name in parentheses.

IsVar

(var_name)