History and revisions¶

N3XD keeps two kinds of history. Use undo and redo to reverse recent actions during a session. Revision history saves durable snapshots that remain available after a restart.

Undo and redo¶

Undo and redo use an in-memory stack of the last 50 document changes. The stack resets when you switch projects. Press Ctrl/Cmd+Z to undo or Ctrl/Cmd+Y to redo.

Revision history¶

Revision history stores durable snapshots for design review. Each accepted change advances the project revision and records an immutable snapshot, so you do not need to save revisions manually.

• Open the Revisions panel from the sidebar Manage section. Each entry is labeled with the operation that produced it (extrude, update, move).
• Click an older revision to restore it. Restoring does not delete later revisions: the revision counter keeps moving forward, and every earlier snapshot stays in the list. You can therefore continue from any point in the history. A restore is also one undo step, so Ctrl/Cmd+Z takes you back to where you were.
• The history is compressed automatically. A save with no changes adds no entry, and a burst of similar edits (such as dragging a parameter slider) is combined into one. Edits made by an AI agent are never combined, so each one stays restorable. Older revisions are kept at decreasing intervals: more often during the last hour, then roughly hourly, daily and weekly.
• N3XD keeps up to 100 revisions. Snapshots share identical content, so each one stores only the document JSON and any new payload data.