Abstract: A method and apparatus that includes processing for providing reliable interoperation of the plurality of independent software modules. Such processing begins by determining selection of an object by one of a plurality of independent software modules to produce a new object selection. The processing then continues by determining object selection status, which indicates a selected object and an associated one of the plurality of independent software modules. In other words, the object selection status indicates which independent software module is currently managing a particular object. The processing then continues by updating the object selection status when a difference occurs between at least one of the independent software modules identified currently in the object selection status and the independent software module selecting the object, and/or the newly selected object is different from the object identified in the object selection status.