UML Deviations

Unlike standard UML 2.5.1 where a State Machine strictly owns one or more explicit Region containers at its root level, Logiop Studio State Machines host Vertices and Transitions directly on the top-level canvas without an explicit Region wrapper.

In UML, a Submachine defines top-level Vertices directly on its canvas. Logiop Studio requires a Submachine to enclose all internal modeling elements within a single top-level Composite State container.

In UML, a Submachine State Machine maintains its own encapsulated namespace and behavior definitions. In Logiop Studio, Submachines inherit the Behavior repository of their root State Machine, ensuring a unified catalog for Events, Actions, DoActivities, and Guards across the entire hierarchy.

Standard UML allows a Submachine State to defer Events directly. In Logiop Studio, a Submachine State cannot defer Events directly; Event deferrals are instead defined on the top-level composite State of the Submachine definition.