Introduction : vernacular writing and the transformation of customary law in Medieval France
What is custom? Concept and literary practice
Composing customary law as a vernacular law
Writing a 'iusiusiusius non scriptum' : writtenness, memory and change'
Uneasy jurisdictions : lay and ecclesiastical law
Roman law, authority and creative citation
Custom in lawbooks and records of legal practice
Dynamic text : dialectic, manuscript culture and customary law
Implications of circulating text : crafting a French Common Law
Conclusion : lasting model and professional community.