[R] Links to vignettes in the base packages

[Richard Cotton]

Contributed packages have copies of their vignettes on CRAN (in their
package page at <cranmirror>/web/packages/<packagename>).

Since base packages no longer have a page here, I can't find a web link to them.

I'm aware that I can find the vignette via browseVignettes() or
vignette("vignettename", package = "packagename").  There are two use
cases where a web link is more useful.  If someone is asking for help
and I want to direct them to a vignette, having a link to a vignette
rather than getting them to open R and type a command increases the
chance that they will actually bother to look at the thing. Secondly,
if I want to read a vignette on a machine without R (ebook reader,
phone, whatever), then a web link is more convenient.

Are the base vignettes available online?  If so, where are they?  If
not, is it feasible to make them available?

-- 
Regards,
Richie