Is there a pre-existing demo page.
It's actually running two clients and the server inside the browser window so even though it's simulating real-world, it's the actual code that powers Triplit.
However, when it comes to collaborative text you're absolutely right and support is on our roadmap. A researcher in this space has already implemented his collaborative sequence library on top of Triplit with the Quill text editor and you can check it out here: https://github.com/mweidner037/list-positions-demos/tree/mas...