[Rd] British or American spelling?

[Gordon Smyth]

I was curious to read the following in the "Guidelines for Rd files" at 
http://developer.r-project.org/Rds.html:

     "For consistency, aim to use British (rather than American) spelling.
      (NB: British spelling often uses -ize as in `capitalize'. The view of 
spell -b
      of British spelling is a flawed American one. There are English/Scottish
      differences too.)"

because R seems to use American spellings throughout, e.g., "color" instead 
of "colour".

What is the current R-devel view on this?

Gordon