Export Multiple Texture Skins
You can give your model multiple skins (textures) so that the same mesh can look differently in different uses.
Displacement Alpha Blending
Information on displacement alpha blending and the shaders you can use to visualize the blending.
Mass Model Fetch
The Mass Model Fetch Utility allows you to import multiple props into your scene at once.
Attachments & Particle System UI
Attachments are points on your model where you can attach extra models and particle systems (guns, sprites, etc). This page details both Attachments and Particle Systems since the Particle System controls are also in the attachment rollout.
Level of Detail (LOD) Generator & Tools Rollout
The Level of Detail Tools Rollout gives you controls for making LOD models and other LOD-related tools.
Export Body Groups | $bodygroup
You can export body groups ($bodygroups) directly into Source in 3ds Max.