For me, a plugin is something different. It must comply with:
* External software that extends the functionality of the native software.
* External software that can be shared between several applications that share the same host (or plugin system).
That a plugin can share information with others may or may not be necessary, but it is not essential.
What is essential is to "extend functionality" and "be compatible between applications."
In the case at hand:
* Extend functionality: Comment on any point in a plugin chain, including the track or bus that hosts the plugins.
* Be compatible: Allow commenting in Qtractor and also within Carla.
For me, a plugin is something different. It must comply with:
* External software that extends the functionality of the native software.
* External software that can be shared between several applications that share the same host (or plugin system).
That a plugin can share information with others may or may not be necessary, but it is not essential.
What is essential is to "extend functionality" and "be compatible between applications."
In the case at hand:
* Extend functionality: Comment on any point in a plugin chain, including the track or bus that hosts the plugins.
* Be compatible: Allow commenting in Qtractor and also within Carla.
Of course, someone had to have thought of this before, it exists but for VST Windows:
https://codefn42.com/vstnotepad/index.html
Again I have tried to understand lv2 and I have crashed again.
My logic tells me, take an example, insert a text field, and delete the faders.
But no, lv2 doesn't work like that. :)