Michael, (as always) thanks for the thoughtful reply.

I'll wade back through the plug-ins when I get a few minutes to spare (how can I be so busy all the time?!!) and let you know what I've tried and think I'd find useful to have one hand and more visible.

One thing I've noticed as I've read through many of the threads (changing subject here) is how often people get messed up by lines which they thought met at a common endpoint, but when you zoom in are off by a tiny amount. Along with keeping tangency between lines (something I think I remember you discussing) would it also be possible to "weld" endpoints together (as apposed to joining both entire lines)such that you can't accidentally move a line's endpoint off it's fellow while editing it?