Expand and collapse function in the editor

[cie77 3]

I would welcome a function to expand and collapse text elements in the editor. 

On the one hand for text blocks, but on the other hand especially for sublevels in enumerations and to-do lists ...

This way the focus would remain on the main level, but at the same time there would be the option to have the details for individual sub-items at hand with one click.

Just a small feature, but I think it would improve the clarity and structure especially for notes with more complex tasks with several sublevels ...

Or are there ways to solve it that I overlooked?

Thanks and best regards,

Chris