6. The method of claim 1 , further comprising: resolving a conflict between the merge definition of the second instance and the merge definition of the first instance to produce an output merge definition.
6. The method of claim 1 , further comprising: resolving a conflict between the merge definition of the second instance and the merge definition of the first instance to produce an output merge definition. 7. The method of claim 6 , wherein the plural parts of the modular document relate to respective different content of the modular document, where the different content are combinable for presentation of the modular document, the method further comprising: merging, by the electronic device, the second instance with the first instance, wherein any conflict between the second instance and the first instance is resolved according to the output merge definition.