[R] what does SEXP in R internals stand for

[Alexx Hardt]

Am 13.11.2010 14:50, schrieb John Fang:
> Hi all,
>
> Is there any one that would give an explanation on the abbreviation SEXP
> used in R internals to represent a pointer to a data structure?
>
> Thanks!
>    
S-Expression, I believe:
http://en.wikipedia.org/wiki/S-expression

Best wishes,
  Alex