This screenshot shows the relationship between the scope and the direction in which the data is passed. This screenshot contains four rectangles one inside the other. The outermost rectangle represents Process Flow Parameters. The second rectangle represents Process Flow Variables. The third rectangle represents Activity Parameters. The innermost rectangle represents Transition Expression. A double-headed arrow points from top to bottom connecting the Process Flow rectangle and the Activity Parameters rectangle. A double-headed arrow points from top to bottom connecting the Process Flow Variables rectangle and the Activity Parameters rectangle. A single-headed arrow points from top to bottom connecting the Activity Parameters rectangle and the Transition Expression rectangle. A single-headed arrow points from top to bottom connecting the Process Flow Variables rectangle and the Transition Expression rectangle. A single-headed arrow points from top to bottom connecting the Process Flow Parameters rectangle and the Transition Expression rectangle. A single-headed arrow points from top to bottom connects the Process Flow Parameters rectangle and the Process Flow Variables rectangle.