The IS editor mirrors the reading environment, maintaining a history of actions as they are added. You can test the current edited scene at any time without the need to replay the entire story.
You can also add a bookmark at any time during the editing process. The testing environment allows you to add or remove items from the inventory, enabling testing of different scenarios within a scene.
You can navigate to different scenes within the editor using the action history. This is the preferred method as it will not break the logical flow of your story. You can also directly select a scene and event, however this will break the logical story flow and may change your story behavior in testing. The action history records direct scene selection as an EDIT action.
The following tutorial provides an in depth look at using the IS editor: