> For the complete documentation index, see [llms.txt](https://emotiv.gitbook.io/emotivpro-v3/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://emotiv.gitbook.io/emotivpro-v3/event-markers.md).

# Event markers

- [About event markers](https://emotiv.gitbook.io/emotivpro-v3/event-markers/about.md)
- [Baseline markers](https://emotiv.gitbook.io/emotivpro-v3/event-markers/baseline-markers.md)
- [Serial port markers](https://emotiv.gitbook.io/emotivpro-v3/event-markers/serial-port-markers.md)
- [Keystroke markers](https://emotiv.gitbook.io/emotivpro-v3/event-markers/keystroke-markers.md)
- [USB markers](https://emotiv.gitbook.io/emotivpro-v3/event-markers/usb-markers.md)
- [EMOTIV Extender triggering (Legacy – No Longer Supported)](https://emotiv.gitbook.io/emotivpro-v3/event-markers/emotiv-extender-triggering.md)