Template T specifies the base grid class this class should derive from. It could be either a CGXGridWnd or CGXGridView derivative.
A Regular Grid is a hierarchical grid with a look and feel similar to that of any other grid derived from CGXGridCore.
Here is an example grid view class that derives from this template:
class CRegularGridView : public CGXRegularGrid<CGXGridView>
CGXHierarchyGrid