All About Pocket Knives

Can someone tell me how this knife, called a "loomfixer" fixes looms???

p.s. to s-k; this is the blade you wanted to see!

That's a beauty upnorth. I thought it looked a little unusual. I don't know anything about looms or repairing them, but i wouldn't mind having one of those loom fixer knives. There can't be too many like that around. Thanks s-k