When editing an article you might notice someone else is already editing it.
When this happens you are not able to write inside the story, and can only leave comments.
If you need to change something urgently you can ask that person for access by clicking Request access.
The person on the other end will receive a notification and be asked if he wants to grant you access or not.
If no answer is given within 10 seconds, an option will appear to force take the lock.
By clicking Force take you will get write access and the person on the other end will be forced into read mode.