A keyboard layout: W, U, and J are missing. The shift keys are replaced by keys listing Plural/Passive at top and bottom, and to the left of the letters are seven new keys, each with two labels: 1. Nom/Pres 2. Voc/Future 3. Acc/Imperf 4. Gen/Inf 5. Dative/Impera 6. Abl/Indir 7. Loc/Gerun.
https://digipres.club/system/media_attachments/files/111/894/307/959/247/514/original/208e0a8f97760e22.png