FailSafe Undo System

While the regular undo system will undo common functions and operations that are performed in EasySpreadsheet, it does not undo every single possible function or operation. If you need a FailSafe Undo System, then turn the FailSafe Undo System ON.  (Note: The system is turned on if Edit -> Perform FailSafe Undo's is checked off.)

The advantage of the FailSafe Undo System is that it creates a FULL copy of your spreadsheet, each time you enter something into a cell. Regardless of what functions or operations you perform, the FailSafe Undo System will record a faithful image of your spreadsheet as you move from cell to cell. When you press Ctrl+Z, the previous image of your spreadsheet is simply retrieved and loaded into memory. If you press Ctrl+Z again, the image previous to this one, is simply retrieved and loaded into memory. Similarly, you can redo steps that you have previously undone by pressing Ctrl+Y.

The disadvantage of the FailSafe Undo System is that it slows down the operation of Easy Spreadsheet. A delay will occur as you go from cell to cell. If you have a small spreadsheet and a fast computer, this delay may not matter - but it will if your spreadsheet is large and your computer is slow.

The FailSafe Undo System is a useful feature to use when you are working on a complicated portion of your spreadsheet, but should be turned off when it is no longer needed.