BUG ALERT: When you have two "command" sectors with linedef executor tags, it only executes the lines on one. For instance, I have two buttons. When I push one, the other is supposed to go up, and the first is supposed to go down, but when I push it, it only goes down, and the other one does not go up.
(note: This sentance was poorly worded, so don't expect to understand it.)