Casio SF-4985ER - Manual (Page 26)

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PART 2 Operation Reference
To check the memory status
Press SHIFT and then hold down CAPA to display a screen that shows the
current memory status. To clear the memory status display, release CAPA .
You can enter any mode except the Calculator Mode, Conversion Mode and
Home/World Time Mode here.
Note
The screen example shown here is the SF-4900ER. The capacity values (FREE
and USED total) is different on the SF-4980ER/SF-4985ER display.
To use the FUNCTION key
Press the FUNC key to display a function menu that makes it possible to perform
functions that are not marked on the unit’s keys.
Just like in the above example display, all of the functions included in a function
menu have a number at the beginning. Press the number key that corresponds
to the function you want to perform.
Whenever a function menu item’s leading number is replaced by “
x ”, it means
you can’t select that menu item in the operation you are performing.
Remaining memory
capacity
Total number of
characters stored in
memory