This applies when adding a new message in the middle of an existing sequence diagram as well - TJ3 properly shifts the sequence numbers for subsequent messages. Collaboration diagrams, however, can't automatically adjust the sequence numbers because the diagram itself doesn't have an implied order. Nevertheless, you can manually assign the sequence number for a new message in the property pane, after which TJ3 will then take over and renumber the downstream messages. Interaction diagrams facilitate message selection by providing a pick list of operations supported by a message recipient. New operations for a class may be defined while working on an interaction diagram.
Sequence diagrams support automatic message sequence numbering.
Choose an operation for a message to an object in a sequence diagram. Create a new class from within a sequence diagram. One of the more annoying of these problems was the inability to match the tool's scaling factors with the actual size of a page. Frequently, page real-estate was wasted due to this problem. However, this particular problem appears to be fixed in TJ3 and the whole printing function now works more seamlessly.