The sample set comes in two editions: an original and an extended sample set. The original sample set (one manual plus pedal) offers portrait screens, but for some reason, on my monitors, the screens are rotated by 90°. I don't know whether Hauptwerk v3, for which the sample set was originally developed, handled portrait screens differently. The extended version of the sample set (manual 1 = a Positiv located in the back of the organist, manual 2 = manual stops after restoration, and manual 3 = manual stops before restoration) has left and right landscape jambs, but corresponding portrait jambs are missing. I created an extension that adds these missing portrait jambs.
Additionally, I extended the compass of the pedal from 27 to 30 keys (d1 to f1) using the original audio files.
The extension installs the additional graphics files in a new OrganInstallationPackages folder (001990) and an organ definition file (ODF) with a new UniqueOrganID (001990). Therefore, it does not touch the original installation.