[R] Package with function for plots with embedded hyperlinks?

[Don MacQueen]

Some years ago, if I recall correctly, I learned of a package that 
included a function that would write a plot to a file so that one 
could associate hyperlinks with elements of the plot, such as points. 
Then, when the plot was displayed in a browser, one could click on 
(for example) a point, and jump to wherever the hypelink pointed.

I don't remember then name of the package or function, and haven't 
been able to find it after some searching.

Does anyone know the name, or have a suggestion to help track it down?

Thanks
-Don
-- 
--------------------------------------
Don MacQueen
Environmental Protection Department
Lawrence Livermore National Laboratory
Livermore, CA, USA
925-423-1062