The What You See Is What You Get Editor
WYSIWYG (pronounced 'whiz' - 'ee' - 'whig') stands for 'What You See Is What You Get' and means that what you see in the editing window will be (mostly) what you will see on the published site. You can add and edit things like text, images and tables in the WYSIWYG editor. The interface is similar to a word processing program such as Microsoft Word.
Video Tutorial
Accessing the Editor
The WYSIWYG editor can be accessed in any row where the Content Type field is set to Content Editor.