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Pre-built sheets you can load with one click. They replace the current state (you can save first if you want to keep it).
A portable, reactive data OS — in one HTML file. You own the data.
The right panel shows its dependencies, dependents, and raw value. Click any id to jump there.
s on a value cell to set itOr e to edit a formula. The grid reactively recomputes everything that depends on it.
+ to add a new cellPick a kind (value, formula, program…) and give it an id and body. It joins the live graph instantly.
Save stores it in a browser cookie (auto-loads next time). Download gives you a single .html file with the state baked in — you can email it, commit it, or run it offline forever.