nauty-underlyingg - Man Page
take the underlying undirected graphs of a file of graphs
underlyingg [-q] [infile [outfile]]
Take the underlying undirected graphs of a file of graphs.
The output file has no header. Undirected graphs are passed through without change, while Underlying graphs of digraphs are written in sparse6 format.
Suppress auxiliary information.
January 2023 nauty 2.8.6 Nauty Manual