vi `ei:' (`modeline')

[Guy Harris]

> Another vendor that supplies this "crippled" vi is AT&T.  The System V
> Release 2.0 source tape, straight from AT&T, which we have here does not
> have this hell-spawned modelines feature.

S5R3's "vi", as I remember, has modelines.  Both it and the 4.3BSD
version have a flag to disable it (although I think the flag's name
differs slightly between the two versions, sigh).