This site is designed to take advantage of CSS. If you are seeing this, CSS must not be available or enabled in your browser. Everything should still work, but won't be as pretty. :)
When you click on this icon the UNDO list will be executed one
step down towards the end of the list, or in the direction
future. This means that a further step that has been taken back
with an UNDO will be executed once more (REDO).
