It has come up several times the need of a party_relationship module that allows to relate one party to another.
I've just created a blueprint for it. Your comments will be very welcomed. [1] https://code.google.com/p/tryton/wiki/PartyRelationship -- Albert Cervera i Areny Consultor funcional Tel. 93 553 18 03 @albertnan www.NaN-tic.com
