Change highlighting is beautiful, but there are times when you do not want to display it, for instance when you want to print the view. Now, of course, you can just hit CTRL-S to save the schedule, and of course that removes any change highlighting and of course clears the stack so that you can no longer undo anything; there must be a better way, and of course, there is – we can toggle it on or off.
In Project 2007 all one had to do was either Hide or Show Change Highlighting in order to toggle the change highlighting display on or off.
In Project 2010/2013, one has to find the the Display Change Highlighting button and add it either the the Quick Access Toolbar or the Ribbon.
My preference is to add it to the Ribbon as it takes up a lot of space on the Quick Access Toolbar.