MATH-TYPESET> (render-exp '(square-root (square-root (square-root (square-root (square-root (square-root (square-root (square-root (square-root (square-root (square-root (square-root (square-root (square-root (square-root (square-root x)))))))))))))))))
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          /                /               /              /             /            /           /          _____________________________________________
         /                /               /              /             /            /           /          /         ____________________________________
        /                /               /              /             /            /           /          /         /        ____________________________
       /                /               /              /             /            /           /          /         /        /       _____________________
      /                /               /              /             /            /           /          /         /        /       /      _______________
     /                /               /              /             /            /           /          /         /        /       /      /     __________
    /                /               /              /             /            /           /          /         /        /       /      /     /    ______
   /                /               /              /             /            /           /          /         /        /       /      /     /    /   ___
  /                /               /              /             /            /           /          /         /        /       /      /     /    /   /  _
\/               \/              \/             \/            \/           \/          \/         \/        \/       \/      \/     \/    \/   \/  \/ \/X
NIL