Clearing graphics history (Windows)

Either I am being especially absent-minded today, or setting    .SavedPlots
<- NULL   does not work as expected.  Am I missing something, or should I
send this to R-bugs?

Well, first you have to establish that there *is* a bug in R rather than
in your expectations.  All the clear menu does is

    gsetVar(install(".SavedPlots"), R_NilValue, R_NilValue);

which sets .SavedPlots to NULL in base.  So you may need

assign(".SavedPlots", NULL, "package:base")

You are missing reading src/gnuwin32/devga.c: I was being far too kind in
reading it for you.

Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595