** inline expressions :PROPERTIES: :session: 'default :DATE: 2010-06-06 :END: #+begin_src R :exports code :results silent x<-4 #+end_src the sum of 1 and x is equal to src_R{x+1}, now I'll sneakily reset this value in a hidden inline block src_R[:exports none]{x<-2}, so it's value is now src_R{x}.