In my many years of Unixing, I never used any vtxy0 with x greater than 2. The vast majority were vt100 or close. Especially compatibles; the few genuine DEC

In my many years of Unixing, I never used any vtxy0 with x greater than 2. The vast majority were vt100 or close. Especially compatibles; the few genuine DEC terminals that came with the machine were left in the machine room.