Thank you @JackGruber! I'm happy you find all of them useful and would highly appreciate seeing them implemented at some point. I read on your Backup Plugin thread you cannot drink more coffee, but what about Ko-fi then? 
@uxamanda Indeed I referred to the HTML tags. I wrap up parts of my notes with details tags regularly since I ran into this code on another thread:
<details close> <summary>Choose a title</summary>
Place the note overview section here..
I also use this a lot with PDF attachments.
</details>
The summary tags allows you to choose the text being displayed on the first line, which becomes the only line shown when folded.
The close attribute is optional (which can be replaced by open) and forces the view each time you open the note.
Hope this helps!
Edit: Make sure to leave an empty line below the 'opening' tag for embedded code to render properly, as shown in the example above.