Heh, one possibility is: AB 0:1(C),0:2(D) For a three node graph with edges between vertex 0 and 1, and vertex 0 and 2, vertex labels 'A' and 'B' and edge lab

Heh, one possibility is: AB 0:1(C),0:2(D) For a three node graph with edges between vertex 0 and 1, and vertex 0 and 2, vertex labels 'A' and 'B' and edge labels 'C', and 'D'. Not great to parse (as I sadly found), but possible to read.