Nothing special but better to navigate inside the note (google docs in this case).
I just create "Table of contents" in Google Docs (https://en.wikipedia.org/wiki/Google_Docs). In one document you can create links to headers and back to "Table of contents", it's easier for me to navigate through amount of content. For each topic I need, I create separate document in folder, let's call "MANUALS" and inside this folder there are several documents "MANUAL_1", "MNUAL_2".
I don't know if this answer satisfies you.
You can imagine how it would be wonderful to have the same possibility