[R] pyramid.plot: x-axis scale

[ws]

> Hi ws,
> You could tweak pyramid.plot in the plotrix package to do this.

I guess I will live without...

Unless you can spell the process out for doing that -- where is the source,
where would the package download be on my machine before (Mac OS X), who would I
send a working patch to.  If (the maintainer, right?) think it matters I can do
that, but I probably need a little handholding.