-Displays a game of pong. It doesn't keep score
-because they are not suppose to miss.
-Written by Jeremy English.
+This simulates the 1971 Pong home video game, as well as
+various artifacts from displaying it on a color TV set.
+
+In clock mode, the score keeps track of the current time.
+
+http://en.wikipedia.org/wiki/Pong
+
+Written by Jeremy English and Trevor Blackwell; 2003.