Edit history & undo

Every layer keeps its previous bitmaps. Pixel-edit a sprite, regenerate it with AI, replace the texture from your file system — Charios stashes the old version so you can step back later.

The History panel

Bottom of the right rail, below Preview. When you select a layer that has past versions, the panel shows them as thumbnail cards in reverse-chronological order. Click any card to revert to that version. The current bitmap goes onto the history stack — so the revert itself is reversible.

Global undo

⌘ + Z works on every editor action — drag, scale, rotate, paint, regenerate, variant apply, layer delete, body shape change. ⌘ + Shift + Z redoes. The undo stack is per-project and persists across sessions for the most recent ~50 actions.

What History tracks vs Undo

• Undo captures every editor action, big or small — useful for stepping back through a recent edit session.
• History captures only texture replacements on a single layer — pixel edits, regenerates, file replaces. Useful for jumping back to a version you tried two days ago.

Old versions are kept indefinitely

We never delete past layer bitmaps automatically. They live in storage attached to your project; the History panel is the only way to access them. If you delete the project, all its history goes with it.