Undo

The Undo function removes the last entry that was made in a field, or reverts the last command.

For example, if you manually entered an amount in a field that previously had a value of zero, Undo changes the field value back to zero. Similarly, if you pasted an amount into a field, and then selected Undo, the amount would be removed from the field.

To undo:

From the field in question, do one of the following:

Click the Edit menu; then, select Undo.
Press Ctrl+Z.