Times 16 steps one at a time, and where the browser allows, each GPU kernel; the text below can be copied to share.
No custom snapshots yet. Saving pauses the model and keeps its state in this browser; Export writes one to a file you can share, and Import reads such files back.
Saved runs served alongside the page. The run the page starts from is kept in this browser once downloaded, so later visits load it without the network; Forget frees that space. Downloading copies a run into this browser's store as a snapshot, where it appears under Custom.