List of the various projects: how to?

[nounours18200]

Thank you very much !

I have also found this topic, with very simple and clear explanation:

Workspace organization

Lets gets some basics out of the way. PlatformIO is in two parts - the PIO Core/CLI, which is the heart of PIO, and does all the toolchain, dependency, compile & library management, etc. Then you have the PlatformIO VSCode extension, which adds the integration between PlatformIO and VSCode, so you don’t have to use the command line to interact with PlatformIO. Everything else is in the domain of the editor you are using - in this case, VSCode. Workspaces, IntelliSense, syntax highlighting, etc …

this may help some others…