Warning: This function is
currently not documented; only the argument list is
available.
Warning: This function is
EXPERIMENTAL. The behaviour of this function, the
name of this function, and anything else documented about this
function may change without notice in a future release of PHP.
Use this function at your own risk.
Draws a vertical line path from the current point to the target point using absolute coordinates. The target point then becomes the new current point.
Return Values
No value is returned.