Thanks, tsuwm! Still lurking. It occurred to me, after I joined, that it ain't real easy to jump into, or start, a thread. For instance, one can't just post an entry like this: "So! Catenary! Some word, huh?" That's called, in the newsgroup world, a "Me Too" post. So I wait, in my lazy way, for an opportunity to get into the fray. Still having fun here, tho.

Mike

Mike