1. Quick Explorer File Select
The next time you need to select most of the files in an open Explorer window--single- or double-paned--don't waste your time holding down Ctrl and clicking each file by hand. It's much easier to select the ones you don't need, and then let Windows reverse your selection.
Inside an open window, hold down Ctrl as you select the file(s) you don't want to select (sounds backward, but wait and see what happens). Select Edit, Invert Selection, and Windows will turn your selection inside out!
Microsoft® Windows®95 Hints & Tips by Stuart Martin.