An indication of a first change is received at a first coordinate location of a client model of the collaborative electronic document. The first coordinate location is within a coordinate structure of the collaborative electronic document. The first change is applied at a second coordinate location of a server model of the collaborative electronic document. The first change is associated with a first revision identifier. An attribution model is generated that includes a coordinate structure that corresponds to at least a portion of the coordinate structure of the collaborative electronic document and includes a third coordinate location that corresponds to the first coordinate location and the second coordinate location. The third coordinate location of the attribution model is updated with the first revision identifier. The attribution information for the first change is stored in association with the first revision identifier.