On Thu, Jul 7, 2011 at 4:18 AM, Josef <[email protected]> wrote:

> So, perhaps User Attributes would work also

Yes.  The ambiguity has become intentional.

> What is v? Is this the unique node, which is identical when multiple p
> represent the same clone?

Exactly.  v stands for vnode, which used to mean "visual node" way
back when there were other kinds of nodes.  Later, a "grand
unification" of nodes resulted in vnodes becoming the only kind of
node.  The evolution of Leo's data structures took years, and happened
in several stages.

For a slightly more complete history, see:

http://webpages.charter.net/edreamleo/history.html#leo-4-2-complete-at-last

and

http://webpages.charter.net/edreamleo/history.html#leo-4-7-the-one-node-world-and-python-3k

And I just noticed a typo.  The text for this second section should
read: tnodes *no* longer exist.

Edward

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