Oh yes, and for languages where that is not directly possible, there are still ways - I implemented libraries for Chicken Scheme in org-mode with org-babel; the

Oh yes, and for languages where that is not directly possible, there are still ways - I implemented libraries for Chicken Scheme in org-mode with org-babel; the examples are simultaneously tests, runnable directly from within the org file, and live next to the code together with the docs. org-babel's tangle and org's export take care of the rest.