1. Can be toggled on/off in the account workspace page.
2. Adding and editing creates a draft, instead of saving to the orginal.
3. Drafts can be saved or discarded at will.
4. Drafts can be played back just as any other saved test.

Turning on Drafts

Navigate to the account workspace where you'd like to toggle drafts.

Now when you create/edit a test it will copy that test as a draft.

If editing a test, the original won't be touched until you hit "save draft" which will replace the existing one.