# Interaction

The interaction subsystems contain controls, selection, picking, annotation tools, and scene helpers.

## In This Section

- Camera controls
- Point and region picking
- Selection state management
- Annotation toolkit lifecycle
- Scaling utilities

## Suggested Starting Points

- [WasmGPU.createControls.orbit](./wasmgpu-createcontrols-orbit.md)
- [WasmGPU.createControls.trackball](./wasmgpu-createcontrols-trackball.md)
- [WasmGPU.pick](./wasmgpu-pick.md)
- [WasmGPU.createAnnotation.toolkit](./wasmgpu-createannotation-toolkit.md)

Use the sidebar to explore all interaction APIs.