Regex Help

1. Once you have the character vector from the regex, see ?strsplit to
get the strings on either side of the "->" .
You may have to fiddle a bit if one or the other side is empty.

You can then format the results as you like.

2. "Graphical representation similar to this" is too vague a
specification to be meaningful.

Cheers,

Bert Gunter

"The trouble with having an open mind is that people keep coming along
and sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )