Thread:Katat0nyx/@comment-5275054-20140212230654/@comment-15636815-20140215002430

That's a great start! I think it needs to be more clear, though. The word "possible" doesn't quite do it.

Brevity is the key, of course. To increase the clarity, especially for all the new users who keep insisting that contractors require gems, the wording should convey something like this:
 * This locomotive pulls 4 wagons. Choose a total of 4 wagons, using one or more of the following:

My brain is tired right now, and I have higher RL priorities today. I can work on it tomorrow, or someone else with more time available can work on it sooner.