I am having trouble visualizing what they might look like. Do you have a sample I could see to get me past that hump? (Would probably teach me something along the way, so I am all for it!).
I can imagine the hand waving I would do if I were speaking in person about this. (Reminds me, I keep meaning to do an article about the hand waving dance I do when describing rules... Looks totally ridiculous, but I think it conveys meaning. Maybe I should just try and post a YouTube video of me doing it... Nah, I have some measure of dignity. Not a lot, just some!)