Bold **bold**
Italics *italics*
Strikethrough ~~strikethrough~~
Header # H1 ## H2 ### H3
item
* item
Blockquote > blockquote
@somebody (mention) @somebody
#123 (issue) #123
Link [title](http://)
Image 
code `code`
LaTeX $$LaTeX code$$
var code = "formatted";
(shift+enter for line break)
var code = "formatted";