Highlighting edges

If the mouse moves over an edge in a flow control graph this edge will be highlighted, moreover the edges with common summands in the other flow control graphs will be highlighted.

Legend of symbols used in the flow control graphs

The parameters which are displayed at the righthandside of the flow control graph are parameters which occur in one of the summands of the edges in the graph. The white buttons are these of the parameters which occur only in the summands of that cluster, the yellow ones are these of the parameters which occur also in summands outside that cluster. One of these parameters can be selected.
red colored elipse
selected parameter occurs in one of the conditions in one  summand of the outgoing edges
red colored action label
selected parameter occurs in one of the actions or in the next state vector in one summand of the edge
blue colored edge
the component in the next state vector belonging to the selected parameter will be overwritten by a term not equal to the name of the selected parameter