TYVM for the explanation. I was not aware they weren't considered LoCs & people could just walk away from them. Seems kind of a risky business model in that case, so I wonder why there's been such an explosion of them over recent years. There must be some way they're able to protect themselves from that.
Ah, well - another rainy day research project to throw on the pile if I'm so inclined.
Thanks again for the reply!