Freight Train
Firing Squad
Strider
Wick
Directed Acyclic Graph - A directed graph with no directed cycles. For any vertex V there is no path that starts and ends on V. In Calca 3, DAG's are used to illustrate the concept of Protism. Some examples of DAG's used in Calca 3 are the Freight Train, the Firing Squad the Strider and the Wick.