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//0x4 bytes (sizeof)
struct _MMSECTION_FLAGS2
{
    USHORT PartitionId:10;                                                  //0x0
    UCHAR NoCrossPartitionAccess:1;                                         //0x2
    UCHAR SubsectionCrossPartitionReferenceOverflow:1;                      //0x2
    UCHAR UsingFileExtents:2;                                               //0x2
};