Dag \(em A Program for Drawing Directed Graphs g GD S GE S GS S ~dags ~drawings ~crossings ~strings ~gsave Basics s Node Attributes s Node Shapes s Node Labels s Node Colors s Edge Attributes s Edge Labels s Edge Weights s Edge Styles s Edge Colors s Spacing Control s Rank Assignment Control s Drawing Algorithms ShadedBox S backedge S backpath S separate S acyclic graphs bounding box code generator default attributes s directed graphs g draw dag dummy node s edge crossing s edge statements p GD line p graph description incident edges s invisible flat-edges s maximum rank S minimum rank S optimal rank assignment s running time s spline control points troff c \*(PC C \*(PO draw nodes S Plaintext S Box S Square S Circle S Doublecircle S Ellipse S Diamond S user-defined shapes s dagsetcolor S draw edges S line style s seperate S same rank S ordered edge S draw_dag S \fIPath\fP statements p