Scope [was variable not available...]

Hi rebolers: For the recent commers to rebol and even (some of us) old guys a discussion on scope is worth having (again). Rebol's approach to scope is very simple but has some gotchas. http://www.rebol.com/docs/core23/rebolcore-9.html documents functions and has some illustrations about scope. I also recommend the resources made available by Ladislave at http://www.fm.vslib.cz/~ladislav/rebol/ and look for the link to 'lfunc. I've been using something like this for years. Tim