42. A computer-implemented method comprising: accessing from a memory an executable graphical model including a plurality of components, the components issuing, during execution of the graphical model, at least two of: messages that persist for determined time intervals within a time period between a model execution start time and a model execution end time, have payloads that remain fixed for a given send-receive interaction, and have a message order during the execution of the graphical model; events having an event order during the execution of the graphical model; or function calls including a function call order during the execution of the graphical model; automatically generating, by a processor coupled to the memory, a display for the executable graphical model, the display including: an execution time scale corresponding to a time of execution of the graphical model; lifelines corresponding to the components, the lifelines extending across the execution time scale; and at least two of: first graphical affordances extending between the lifelines, the first graphical affordances representing the messages, and being arranged on the display in the message order; second graphical affordances extending between the lifelines, the second graphical affordances representing the events, and being arranged on the display in the event order; or third graphical affordances extending between the lifelines, the third graphical affordances representing the function calls, and being arranged on the display in the function call order.
42. A computer-implemented method comprising: accessing from a memory an executable graphical model including a plurality of components, the components issuing, during execution of the graphical model, at least two of: messages that persist for determined time intervals within a time period between a model execution start time and a model execution end time, have payloads that remain fixed for a given send-receive interaction, and have a message order during the execution of the graphical model; events having an event order during the execution of the graphical model; or function calls including a function call order during the execution of the graphical model; automatically generating, by a processor coupled to the memory, a display for the executable graphical model, the display including: an execution time scale corresponding to a time of execution of the graphical model; lifelines corresponding to the components, the lifelines extending across the execution time scale; and at least two of: first graphical affordances extending between the lifelines, the first graphical affordances representing the messages, and being arranged on the display in the message order; second graphical affordances extending between the lifelines, the second graphical affordances representing the events, and being arranged on the display in the event order; or third graphical affordances extending between the lifelines, the third graphical affordances representing the function calls, and being arranged on the display in the function call order. 43. The computer-implemented method of claim 42 wherein the graphical model executes over a plurality of simulation time steps, and at least one of the third graphical affordances is arranged on the display as occurring in one of the simulation time steps.