the results are in existing_tools/exp-blocks/example-for-r.html. To
get this working I had to make two changes...
First in testing.Rorg, I changed every block as follows
from
#+BEGIN_R:
#+END_R
to
#+BEGIN_R
#+END_R
Second I fixed a broken regexp in org-exp-blocks.el
This is capable of running calculations on the R blocks and the inline
\R{} segments, but is not yet able to handle the image generation
commands.