Why? If your article seems too long and you would like to make it easier and more comfortable for your readers, you can add Page Break option, which allows to create multiple pages being inside the same article (so you don't need to write several separate articles for this case).
In addition, this option also inserts a subtitle to each of the following pages and creates the Table of Contents.

 

How:

1. click on button Page Break button below:

2. Write Page Title (it will appear in the article on the next page and is added to the main article title)

3. Write Table of Contents Alias (it will appear as "navigation") - Ready! (just go on writing your article until the next Page Break)

 

Happy page breaking!