# Extending

- [System Inputs](/apk-documentation/extending/system-inputs.md)
- [Name / Emission Highlighting](/apk-documentation/extending/name-emission-highlighting.md)
- [System Namespace](/apk-documentation/extending/system-namespace.md)
- [Adding a Trigger Event](/apk-documentation/extending/adding-a-trigger-event.md)
- [Adding Audioclips](/apk-documentation/extending/adding-audioclips.md)
- [Audio Effect Volume](/apk-documentation/extending/adding-audioclips/audio-effect-volume.md)
- [Swapping Character Controllers](/apk-documentation/extending/swapping-character-controllers.md)