How to leave a predefined HTML inside a WYSIWYG editor, such as CKEditor 4?

Good evening, just find out recently about the WYSIWYG editors. I'm using CKEditor 4, and would like to know if there is a possibility to put pre-defined text inside it. In other words put an already pre-defined HTML text where the person will only tinker at the content inside it without the need to add any structure at all. Here is a small example that I did: