Sets the current point to new coordinates. If this is the first call of ps_moveto after a previous path has been ended then it will start a new path. If this function is called in the middle of a path it will just set the current point and start a subpath.
Resource identifier of the postscript file as returned by ps_new.
x-coordinate of the point to move to.
y-coordinate of the point to move to.
Returns true on success or false on failure.