vt
select automatic drawing of PseudoGraphics
SYNOPSIS
vt [0|1]
DESCRIPTION
The vt command causes a low-resolution plot to be drawn automatically after np, gd, fn, f1, f2 or f3 are executed. With no parameters, the automatic-drawing option is toggled. If 0 is given as an argument, automatic drawing is turned off. If the argument is 1, automatic drawing is turned on.
EXAMPLE
vt 1