diff object
A diff object represents the difference B-A between two objects, A and B, as a list of operations (ops) to apply to A to obtain B.
merge decision
An object describing a part of the merge operation between two objects with a common base. Contains both the information about local and remote changes, and the decision taken to resolve the merge.
JSON Patch defines a JSON document structure for expressing a sequence of operations to apply to a JavaScript Object Notation (JSON) document; it is suitable for use with the HTTP PATCH method. See RFC 6902 JavaScript Object Notation (JSON) Patch.