## SYNOPSIS

**directg**[

*-q*] [

*-u|-T|-G*] [

*-o*] [

*-f#*] [

*-e#|-e#:#*] [

*infile*[

*outfile*]]

## DESCRIPTION

- Read undirected graphs and orient their edges in all possible ways.
- Edges can be oriented in either or both directions (3 possibilities). Isomorphic directed graphs derived from the same input are suppressed. If the input graphs are non-isomorphic then the output graphs are also.
**-e**# |**-e**#:#- specify a value or range of the total number of arcs
**-o**- orient each edge in only one direction, never both
**-f**#- Use only the subgroup that fixes the first # vertices setwise
**-T**- use a simple text output format (nv ne edges) instead of digraph6
**-G**-
like
**-T**but includes group size as third item (if less than 10^10) - The group size does not include exchange of isolated vertices.
**-u**- no output, just count them
**-q**-
suppress auxiliary information