Excel 2007/10 tip: Press Ctrl-Z repeatedly to undo your last 100+ actions. Even better, you can still undo actions after you save your file. In Excel 2003 and earlier you can only undo the last 16 actions, and saving your file clears the undo stack. You cannot undo renaming a worksheet name or deleting a worksheet in any version of Excel
Jul 23
Undo Comparision
