#! /usr/local/bin/wish -f

label .line1 -text "INSTRUCTIONS" 
label .line2 -text "Click and drag with the left mouse button to create lines."
label .line3 -text "Click the middle mouse button to clear the lines."
label .line4 -text "Click the right mouse button to exit."

pack .line1 .line2 .line3 .line4