There are two ways to tell if the timing belt has been replaced. One is obvious-you are looking at a service receipt showing the replacement.
Swimlane diagrams are used whenever you need to show activities, tasks, or process steps which are being performed by different actors/roles. You can use swimlanes to group activities in an activity diagram or process flow by any category what you need: by role, by system, by department, etc.
Swimlanes are shapes that you can drag onto your drawing and place in any order in your flowchart. Drag to move them or change their size, and drag process step shapes into them to build the flowchart. Note The following procedure assumes that your drawing has the Cross-Functional Flowchart stencil available.