Sometimes an area of a page to which you want to add text has formatting attributes that you don't want in the additional text. The GUI makes it really hard to remove that formatting in certain situations, and editing the HTML is very tedious. This is a workaround that is less tedious.
For example, the end of a page has a codeblock with no blank line after it where you want to add more text that you don't want to be a codeblock:
Typing a blank line results in:
Type an x on that, select it, and then remove the formatting:
Replace the x with the text you want to add: