Variable: pong-height
pong-height is a customizable variable defined in pong.el.gz.
Value
19
Documentation
Height of the playfield.
Source Code
;; Defined in /usr/src/emacs/lisp/play/pong.el.gz
(defcustom pong-height (min 30 (- (frame-height) 6))
"Height of the playfield."
:type '(integer))