Org-mode
http://orgmode.org/worg/org-tutorials/org4beginners.html
http://orgmode.org/worg/org-tutorials/orgtutorial_dto.html
https://www.youtube.com/watch?v=bzZ09dAbLEE
http://orgmode.org/worg/org-tutorials/org4beginners.html
http://orgmode.org/worg/org-tutorials/orgtutorial_dto.html
https://www.youtube.com/watch?v=bzZ09dAbLEE