TI -82 Manual Book page 29

Display Cursors
In most cases, the appearance of the cursor indicates what will happen
when you press the next key.
Cursor
Entry
INS (insert)
2nd
ALPHA
"full"
If you press ƒ or y during an insertion, the underline cursor changes
to an underlined
If you press y or ƒ on a screen on which there is no edit cursor
(such as the
corner.
Graphs and the screens for viewing and editing tables, matrices, and lists
have different cursors, which are described in the appropriate chapter.
Busy Indicator
When the TI.82 is calculating or graphing, a moving vertical bar shows in
the upper right of the display as a busy indicator. (When you pause a graph
or a program, the busy indicator is a dotted bar.)
Appearance
Solid blinking
rectangle
Blinking underline The next keystroke is inserted in front
Blinking # (arrow) The next keystroke is a
Blinking A
Checkerboard
rectangle
or # cursor.
A
MODE screen or a graph),
Meaning
The next keystroke is entered at the
cursor; it types over any character.
of the cursor location.
The next keystroke is an alphabetic
character.
You have entered the maximum
characters in a name, or memory is
full.
# or A appears in the upper right
Operating the TI.82 1-5
operation.
2nd