The Change View feature of Revit Shared Parameter File Editor/Viewer can switch from the Classic View to the Grouped View, back and forth.
The Classic View is a single data grid with all parameters laid out flat so that they can be all sorted with a column such as Parameter Type and Discipline. It will be convenient to inspect or edit all parameters with the same parameter type or the same discipline.
The Grouped View has parameters grouped into different data grids according to the Parameter Groups. In each parameter group, shared parameters can still be sorted based on either column such as type, discipline and even visibility. In each group, all parameters can be chosen with a single click on the group header. In addition, each group can be collapsed or expanded if necessary.