Microsoft FlightSimulator 2020 notepad - allows typing custom text within the sim itself.
To build the SPB if you have changed UI panel template definition run build.bat or manually
It will generate the SPB at msfs-notepad\Build\Packages\msfs-notepad\Build copy the SPB to msfs-notepad\InGamePanels.
Copy the package to community folder BUT DO NOT COPY the msfs-notepad\Build directory.