# Review changes

> Edit a working copy of a Studio 5000 project by hand or with an AI agent, then review every change as ladder, rung by rung, before you export it.

Source: https://orbiscontrols.com/docs/review-changes

Orbis never edits your project file. The agent and you both work on a working copy, and every change is reviewed before anything goes back to Studio 5000.

## Edit

You can change a rung in two ways, on the same working copy:

- **As text.** Edit a rung and see a live preview of the ladder.
- **Graphically.** Insert instructions, drag them, and set operands with tag suggestions.

The agent edits the same working copy when you ask it to.

## Review

The changes panel lists what changed, grouped into change sets with versions. Open the diff tab to see whole routines drawn as ladder, either inline or side by side with the original.

Each change has a review bar. Use **Mark reviewed** when it looks right, or **Revert** to undo it.

## Export

When you are satisfied, export the working copy as an `.L5X` and bring it back into Studio 5000.