Casio fx-CG20 kUsing Undoing and Redoing Operations, Example, To do this:, Press this key:

•Note the following cursor operations you can use while inputting a calculation with Math input/output mode.

To do this:	Press this key:
Move the cursor from the end of the calculation to the beginning	e
Move the cursor from the beginning of the calculation to the end	d

kUsing Undoing and Redoing Operations

You can use the following procedures during calculation expression input in the Math input/ output mode (up until you press the w key) to undo the last key operation and to redo the key operation you have just undone.

-To undo the last key operation, press: aD(UNDO).

-To redo a key operation you have just undone, press: aD(UNDO) again.

•You also can use UNDO to cancel an A key operation. After pressing A to clear an expression you have input, pressing aD(UNDO) will restore what was on the display before you pressed A.

•You also can use UNDO to cancel a cursor key operation. If you press e during input and then press aD(UNDO), the cursor will return to where it was before you pressed e.

•The UNDO operation is disabled while the keyboard is alpha-locked. Pressing

aD(UNDO) while the keyboard is alpha-locked will perform the same delete operation as the D key alone.

Example

b+vbe

D

aD(UNDO)

c

A

aD(UNDO)

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