V4/usr/man/man3/vt.3

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including files from this version of Unix. 
.th VT III 6/4/73
.sh NAME
vt \*- display (vt01) interface
.sh SYNOPSIS
.nf
.ft B
openvt()
.s3
erase()
.s3
label(s)
char s[ ];
.s3
line(x,y)
.s3
circle(x,y,r)
.s3
arc(x,y,x0,y0,x1,y1)
.s3
dot(x,y,dx,n,pattern)
int pattern[ ];
.s3
move(x,y)
.fi
.s3
.ft R
.sh DESCRIPTION
C interface routines to perform similarly named functions
described in vt(IV).
.it Openvt
must be used before any of the others to open the
storage scope for writing.
.sh FILES
/dev/vt0, found in /lib/libp.a
.sh "SEE ALSO"
vt (IV)
.sh BUGS