SysML v1/UAF/UML Model Element Descriptions UAF 1.3 elements Current: Project Sequence Project Sequence DescriptionA dependency relationship between two Actual Projects that denotes one Actual Project cannot start before the previous Actual Project is finished. Architecture FrameworkUAF 1.3, DoDAF 2.0, MODAF, NAF, NAF 4.0ExtensionUML Dependency ×