setscrunch --Command, one input. Abbreviation: setscrun
     This command is used only for display turtles. The input must be a
     number. The vertical component of turtle motion is multiplied by this
     number before each motion is taken. If squares come out too wide on
     your screen, you should increase the number; if too tall, you should
     decrease it. (You can also use setscrunch to deform the turtle's
     motion on purpose, so for example a circle program will draw an
     ellipse instead.) The initial scrunch value depends on the terminal
     you are using: for the Atari and the Gigi, it is around 0.8 (your
     particular computer center will adjust this for the particular TV
     monitors you use), but for the ADM, Tektronix, and Sun, it is 1.0
     because these terminals display the same size steps horizontally and
     vertically.