The above diagram shows the lifecycle for a change request with an initial status of Open. The status was then set to Fixed. After this setting, the built-in workflow added an additional status field of Verified Fixed. Finally, the change request was closed, meaning its status was set to Closed (Fixed).
The diagram also shows that a change request can be reopened at any stage in its lifecycle because the arrows leading from each of the three fixed statuses can lead back to the Open status at any time.