Markdown

• Free plain text: With plain text you enter the world of unbordered choosing of you editor. You are not forced to use a proprietary editor like Microsoft Word or Apple Pages.
• Light weight: A empty file has: 0 Bit and this .md-based file has
• Simple formatting: With the formatting characters of Markdown files you are able to simply change your paragraph to a title, (sub-) heading or list. No more searching of the setting in your editor – just put a # (title) in front of you paragraph.
• Conversion: With tools like pandoc you can easily change your .md files to a .tex version with the same formatting.
• Flavours: Fully compatible versions of Markdown with for example wiki-link functionality.
• Backups: Easy versioning with git

Tell me, what else do you want?