Copy this character: §

Take a Writeable Book
Type (don't copy paste the text below, that doesn't work), use the copied § to insert that character:

§1This is a text


§rReset formatting. It didn't... oh wait

Make sure the reset format is atleast after one new line with pressing Enter.

If you did this correctly, you will see that §r did not reset the formatting, but it should have done that.

Later I figured out it did reset it, but only after it went in the next line, which is weird.

However, if you reset it without a new line, then it will reset it the previous formatting. But it doesn't seem to do that immediately right after a new line.

The result would look like this: