Single
	Choose a menu or command
	Select (highlight) a URL
	Click a hyperlink
	Manipulate windows
	Drag and drop a folder or file
Double is for doing
	Launch a program

Context sensitive menu
	Windows guesses what you might want to do.
Examples
	Start button: Find
	Right-click an image to save the image file to your hard drive (save picture as)
	Right-click a hyperlink like Lesson plans to save the file to your hard drive (save target as)
	Right-click a minimized window on the task bar to close it
	In "My Computer" or "Explorer" get properties (like how much space is left on your hard drive)