## Major Modes

### org-mode 

[Integrating Markdown and Org](http://stackoverflow.com/questions/10383986/emacs-mode-for-stack-overflows-markdown/10386560#10386560) which also shows more how to use the source code handling parts of org-mode.

[Working with source code.](http://orgmode.org/guide/Working-With-Source-Code.html#Working-With-Source-Code)


