+Unlike the original, this version supports use of your arrow keys to edit
+your command line in place. Basic Emacs keystrokes are supported, and
+your up/down arrows access a command history.
+
+Otherwise, the "version" command is about the only way to tell you're not
+running Don's original.
+
+To exit the game, type Ctrl-D (EOF).
+
+There have been no gameplay changes.
+