The anti-aliasing feature has been added in the Director 8.5.1
update, and offers two properties: #antialiasingSupported and
AntialiasingSupported reveals if anti-aliasing can be
used, which depends on the current renderer. If AntialiasingSupported
reports "0", which means it is not supported, switch
the current renderer to software, DirectX 5.2 or DirectX 7.0,
which quickly can be done in the Renderer-Tab.
If antialiasingSupported reports "1", which means
it is supported, anti-aliasing can be switched on by the antialiasingEnabled
If running the 3DPI with Director 8.5 and not Director 8.5.1,
the properties regarding anti-aliasing are greyed out and inactive.