[Sublime Text] Snippet

Snippets typically live in a Sublime Text package. They are simplified XML files with the extension sublime-snippet. For instance, you could have a greeting.sublime-snippet inside an Email package.
The structure of a typical snippet is as follows (including the default hints Sublime Text inserts for your convenience):

    <![CDATA[Type your snippet here]]>
    
    xyzzy
    
    source.python
    
    My Fancy Snippet

Ref:

http://sublimetext.info/docs/en/extensibility/snippets.html

http://www.hongkiat.com/blog/sublime-code-snippets/