Mask     type: DWORDField new     offset: 000;    defineField: #offBmiMask     type: DWORDField new     offset: 000;    defineField: #cbBmiMask     type: DWORDField new     offset: 000;    defineField: #offBitsMask     type: DWORDField new     offset: 000;    defineField: #cbBits