The book was a lady.
Lady poorly versed in the subject, and, apparently, asked the roleplayers.
Roleplayers, apparently rubbed feet and said, "Aha!". Sense of humor, they had a good. 1. So, it turns out, it is necessary to clean the chain mail.
2. I wonder what the army was armed with this crap? :)
3. The magic here is that a) this thing is bad tempered, and b) it someone sat down.
4. Well, there was nothing to say. Megarulez - he is megarulez.