Most useful tech writing sites?

["B. Pfister" <bpfister -at- FRII -dot- COM>]

Dear TechWhirlers:

I would appreciate any links to what you consider are the most useful
technical writing Web sites. What do you keep on your "favorites"
list? I am compiling a library of these sites, and I would like to
discover your favorites for reference, tutorial, good examples,
online documents, help authoring, or anything else that applies to
tech writing. Please reply off-list to bpfister -at- frii -dot- com if you would
rather not clutter the list.

Thank you,

Betsy



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