# Core

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**The scene itself, and the ways to put things in it.** [b3d](/tosi-b3d/) is the
one element everything else lives inside. After that: a
[box, sphere or ground](/b3d-primitives/) when you need something now, a
[model file](/b3d-loader/) when you have one, and a [library](/b3d-library/)
when you want many copies of the parts in one.

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- [b3d](/tosi-b3d/)
- [b3d-loader](/b3d-loader/)
- [Primitives: box, sphere, ground](/b3d-primitives/)
- [make-mesh](/make-mesh/)
- [b3d-library](/b3d-library/)
- [b3d-prop](/b3d-prop/)
- [Material Conventions](/b3d-utils/)
- [Scene schemas](/scene-schemas/)
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