tkcanvas		Creates a canvas widget showing a 2-D plot with
			data points that can be dragged with the mouse. 
tkdensity		Interactive density plots.
tkfaq			Show long file, the R FAQ, using scrollbared window.
tkfilefind		Use a tree widget to explore the filesystem from
			the current working directory.
tkttest			t-test example of GUI interface to a function call.
