Snippets

Snippets are reusable files/code. Once inserted in a page they can be edited within the page source editor.  

Use in Pages

You insert a snippet on a page by selecting the Snippet icon on the WYSIWYG toolbar, then a category and a snippet from it. 

Snippet in WYSIWYG

We use snippets to create the framework of common features.  Layouts, Icons, Tabs, etc.