Blackberry RIM 857 Wireless Handheld Installation & User Manual page 143

Using the MemoPad and Calculator — Using the Calculator function
To use the tape
You can use the Calculator's Tape feature to record and display
your series of calculations. You can review, edit, delete, or insert
entries on the tape.
1. In the Home screen, scroll to the CALCULATOR icon and
click.
2. In the Calculator screen, scroll to Menu and click. Select Switch
to Tape by clicking again.
3. Scroll through your calculations on the tape to review them.
4. Scroll to an entry that you want to change, then click to view
the menu. Scroll to edit the entry, insert a new entry, or delete
the entry and click.
Installation and User's Guide
143