Where to find info on virtual terminals?

[T. William Wells]

My Microport UNIX V/386 3.0e documentation talks about virtual
terminals in the section on getty. However, I found no place where
this is defined. Why am I interested? I'm writing a getty replacement
(Yes, another one: the existing ones are really dirty or don't do
what I want or both.) and if these things are important, I want to
get them right. Please e-mail any info you have and if there is
sufficient interest I'll post a summary.

---
Bill
{ uunet | novavax } !twwells!bill
(BTW, I'm going to be looking for a new job sometime in the next
few months.  If you know of a good one, do send me e-mail.)