Texas Instruments TI-89 Titanium User Manual page 165

Inserting or Overtyping a Character
The calculator has both an insert and an overtype mode. By default, the calculator is in
the insert mode. To toggle between the insert and overtype modes, press 2 /.
If in:
Thin cursor between characters
Cursor highlights a character
Look at the cursor to see if you're in insert or overtype mode.
Note:
Replacing or Deleting Multiple Characters
First, highlight the applicable characters. Then, replace or delete all the highlighted
characters.
Operating the Calculator
The next character you
type:
Will be inserted at the
cursor.
Will replace the highlighted
character.
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