[Doc-SIG] Tokens for labels & endnotes

[Edward D. Loper]

Tibs hurt my poor little brain by saying:
> For labels I want to exclude '-_', but yes, for labels I want to include
> them.

I'll assume that the second "labels" should be "local references" 
(like [this]).

> My rather desparate hope (not having read the RE section in the new 2.1
> manuals yet) is that using REs will give good leverage on the problem
> mentioned at the top of the email, at which point it *does* become
> useful to use '\w'.

Yes, I believe a lot of stuff will just fall out nicely with this.

-Edward