How do I use a newline in the result of find and replace?

To use a newline in the result of find and replace, enable the Use Regex option and use "\n" in your replacement text. For example, given this text:

hello, world, goodbye

If you'd like to replace the ", " with a newline so you end up with this text:

hello
world
goodbye

In the find and replace settings, enable Use Regex, enter ", " as the find text, and enter "\n" as the replace text:

Then click Find All and finally, click Replace All.