A directed graph: step through one-way edges, reachability, sources and sinks, or build your own digraph in free play.
Directed · one-way arrows
vertex
active
reached
source
sink
Step 0 / 0
Press Play. In a directed graph each edge is a one-way arrow from a source vertex to a target.
Speed
Click a source vertex then a target to add a one-way arrow. Click the same pair again to remove it. Drag a vertex to move it.