If you are comfortable working with HTML code you can view this by clicking the "Toggle Editor" link located in the top left corner of the editor, just above the toolbar.

This feature can be useful in an instance where for example, a lengthy document has been provided to you in Microsoft Word for you to add to the webiste

In this instance there are useful resources online that will "clean up" the hidden styles inserted by the Word processor.

A useful resource is http://word2cleanhtml.com

To use this

1. Open your Word document, highlight and copy all of it's content
2. Paste this into the http://word2cleanhtml.com website and click the "convert to clean html" button
3. The resulting page will show the "clean" html code
4. Highlight and copy all of this code and return to your website editor
5. Click "Toggle Editor"
6. Paste the "clean" html code into the editor
7. Click "Toggle editor" to see the result.

NOTE - Whilst this is a useful resource it isn't a complete solution and so you may have to work through your document to correct any errors.