descr_unit attributes

I've been playing around with that file for a while now and noticed that a lot of the attributes are not explained in the commented out section and thus I am curious what they do:

can_formed _charge (i suspect it can do a formed charge but giving it to infantry does nothing)

knight (only seen on units with knight in the name. Cataphracts are not knights for example)


I'll add more when I got time. At the library atm and only working off the top of my head.

Another thing I can think of atm is whether "fast pony" also works for infantry to give them the fast moving attribute or will they run like mounted units that way or do nothing?