As we know (or should know), the building piece in SL is the primitive (prim). Though this is known by builders, we are going to define some interesting prim properties:

• They have a "position" and their coordinates origin is in primitive's gravity center.
• They have a "size"
• They have "rotation" (in X, Y or Z axis)
• They can be rendered with colours or textures
• They can be modified

At the moment Henshin can manage rotations, sizes, positions and textures.