Add function to add comment section

[gotwig]

there should be something like a node but without any functionality and only a title to comment whole zones: This zone does this, this zone does that, example:
https://blueprintue.com/blueprint/2ti4oh1s/

"Jump" is the title of the comment section

[jagenjo]

yes, I was thinking about decorations for the graph.
I will see how I can add it.

[jagenjo]

groups have been added