Hi I am using org-babel to write a simulation model and the accompanying documentation and it works as expected. But I have many source blocks which I want to tangle into the same source file. At the moment, I am using "#+source: BLOCKNAME" (see below). But it is easy to forget to add the block name to the actual tangle block at the bottom. Is there a way of: 1) tangle all source blocks into the same file? As far as I am aware, a new tangle to the same file name, overwrites the already existing file --- I would like to append the new code block to the existing file. or 2) is there a keyboard shortcut, that I can add the name of the block to the actual tangle block automatically, when the e.g. block name is selected? Thanks, Rainer * Here I am doing this #+source: Block1 #+begin_src R some code #+end_src * Here I am doing that #+source: Block2 #+begin_src R some code #+end_src * Creation of Source.R #+begin_src R :tangle source.R <> <> #+end_src -- NEW GERMAN FAX NUMBER!!! Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Centre of Excellence for Invasion Biology Natural Sciences Building Office Suite 2039 Stellenbosch University Main Campus, Merriman Avenue Stellenbosch South Africa Cell: +27 - (0)83 9479 042 Fax: +27 - (0)86 516 2782 Fax: +49 - (0)321 2125 2244 email: Rainer@krugs.de Skype: RMkrug Google: R.M.Krug@gmail.com