Huvitz Excelon XD - Undo; Redo

Excelon XD/XQ Operator’s Manual 59
5.3.8 Undo
Press the undo button ( ) to undo the last change.
All actions entered by the user are stored automatically, even if hole data
deleted by mistake, Hole Editor can easily revert to a previous state.
5.3.9 Redo
The Redo command ( ) reverses the Undo (The opposite of Undo
command). The Redo button enabled after user excute undo function.