In programming, there is usually a way to "comment out" lines of text. Text that has been commented out does not compile and in no way affects the software. It's used for several different purposes, but most often either for having pieces of code that you're testing changes to or for leaving notes to other people RE: what specific sections of your code do.
Is there a way, natively in WordPress or through a plug-in, to introduce this functionality? Say, if you're collaborating on a post with another person and you want to leave a note for them that, if it's missed, won't be visible if the post is uploaded before said note can be removed.
I've tried looking for this myself, but every time I look for "wordpress" and "comments", the results are always in reference to the comments at the end of a published post.