+ TTT_ERROR_NOT_NUMBER,
+ TTT_ERROR_NOT_GRID,
+ TTT_ERROR_NO_USER,
+ TTT_ERROR_NOT_IN_GAME,
+ TTT_ERROR_NOT_PLAYING,
+ TTT_ERROR_NOT_YOUR_TURN,
+ TTT_ERROR_NO_INVITE,
+ TTT_ERROR_NO_GAME,
+
+
+ /* Here's a non-protocol pseudo-error used to implement QUIT. */
+ TTT_ERROR_QUIT_REQUESTED