This is a graphviz-produced layout of the "family tree" of a fraternity and sorority. Each member in the graph was assigned a "big brother" from one organization and a "big sister" from the other. Blue icons represent Brothers from the fraternity, Pink represents Sisters from the sorority (Purple members are in both organizations - like honoraries.) Charter members (who can have no parent nodes) are outlined. From Japheth Cleaver, San Diego State Univ.