MixedGraph is a graph that has undirected, directed and bidirected edges. To create a mixed graph, use mixedGraph. Each type of subgraph (undirected, directed and bidirected) does not have multiple edges and can appear at most once.
The object MixedGraph is a type, with ancestor classes HashTable < Thing.
The source of this document is in /build/reproducible-path/macaulay2-1.25.05+ds/M2/Macaulay2/packages/StatGraphs.m2:486:0.