Is there a way to draw a frame around a sequence diagram, like it is shown in the current uml specification on page 566 (section 126.96.36.199)
The notation for an Interaction in a Sequence Diagram is a solid-outline rectangle. A pentagon in the upper left corner of
the rectangle contains ‘sd’ followed by the Interaction name and parameters. The notation within this rectangular frame
comes in several forms: Sequence Diagrams, Communication Diagrams, Interaction Overview Diagrams, and Timing
A simple group does not achieve the required result, because the instances are not included in the rectangle.