Is your feature request related to a problem? Please describe.
For a better readability it would be nice to toggle/collapse code in the Code Block by clicking a toggle.
Describe the solution you’d like
I would like a solution like in Visual Studio Code
As an example with markdown:
Uncollapsed:
Collapsed:
Great idea, I added this idea to codeblock ideas board.
Also if you have a minute to describe how and how often do you use codeblock It will be great for our product team to understand use cases better 
Hey @ignatovv,
in the past 12 months I learned for an exam and used code blocks nearly every day. I mostly documented a lot of one-line commands with a commend behind them. But this is not a huge use case for the toggle.
I also saved a huge number of scripts in Anytype and I also had to edit them. Since there is no “multiple” window function yet, I had to scroll a lot between the edits. Toggles would have reduced that a lot and also would make it easier to find the specific part I want to edit, without scrolling through the whole script.
I’m not there yet, but I am planning to use Anytype for storing my self-hosting documentation (currently in Bookstack) so saving (long) scripts in Anytype will be a huge part in that.