R v2.10.0: Doc clarification for cross references and where are we heading?

On Wed, Sep 23, 2009 at 10:54 PM, Duncan Murdoch <murdoch at stats.uwo.ca> wrote:

 - Ways to link from man pages to vignettes.  The reverse would be nice, but
it's not possible with the current design, so that would be far off.

If feasible I would like to be able to link to any text, html or pdf
file in the package.  For example, it would be nice to be able to link
to the NEWS file and pdf files that are included in the package even
if they are not vignettes, etc.

The \Sexpr mechanism probably allows this, though there are currently no 
built-in support functions to help you get there.  As I mentioned, that 
could all be done by code in a contributed package.

One way would be to have one help page which contains only

\Sexpr[stage=render, results=rd]{generatePage()}

and it will be 100% generated at render time, containing whatever you 
want it to contain.  (Presumably you'll have some way to communicate 
what you want through variables that generatePage() can see.)  Each time 
you link to it you'll see something different.

Duncan Murdoch