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David Manura wrote:
However, in Lua, this need not be the case at all.  A global variable may be
placed in an environment that is local to a single function (what you call
"non-global environments"), and a local variable can be placed at the top-level
scope: [snip]

As a user, I have never been confused. Perhaps you should read Roberto's "Programming in Lua" book instead of looking at the wiki. Learn it as a language without trying to force things from other languages onto it. Browse the wiki after you do "Programming in Lua" and the reference manual. I won't even try to address the issues you've raised -- they have been amply discussed on the list; you can search the archives.

Kein-Hong Man (esq.)
Kuala Lumpur, Malaysia