[R] Stangle and annotate

[Brett Presnell]

How exactly should I go about turning off annotation when running
Stangle (Rtangle) with "R CMD Stangle myfile.Rnw"?

Ideally I would like to be able to turn annotation off and on for
individual code chunks, or maybe better, to annotate only named
chunks.  Are either of these things easily done?

Is there some way to figure out this sort of thing without reading
through the source code in Sweave.R?

-- 
Brett Presnell
Department of Statistics
University of Florida