I don't use WEU, but in cases when I need very large map. No cases of those happened yet. Your tutorial is for WEU-users, but newbs don't know about WEU, they use what they initially have, and your triggers are whole advanced. Your method, for example, can't be used in many games, but it's a good example of how to methodically use all new WEU functions. But didn't you notice who is the creator of this thread - he wants to find out how tot open/close gates! Your posts actually looks like self-advertising of your tutorial for undiscovered case (recieving +rep).