After usecanvas(%T) the anti_aliasing property and the drawlater/drawnow functions no more have any effect on graphics.
@vincent.couvert)
Reported by Vincent COUVERT (// Exec the three following commands
usecanvas(%T);
drawlater();
plot3d();
// The figure must be white and empty
drawnow();
// The plot3d must appear
f = gcf();
f.anti_aliasing = "16x";
// Here the graphics must be anti aliased