struct _SUBSECTION// Size=0x20
{
    struct _CONTROL_AREA * ControlArea;// Offset=0x0 Size=0x4
    struct _MMPTE * SubsectionBase;// Offset=0x4 Size=0x4
    struct _SUBSECTION * NextSubsection;// Offset=0x8 Size=0x4
    unsigned long PtesInSubsection;// Offset=0xc Size=0x4
    unsigned long UnusedPtes;// Offset=0x10 Size=0x4
    struct _RTL_AVL_TREE GlobalPerSessionHead;// Offset=0x10 Size=0x4
    union _unnamed_746 u;// Offset=0x14 Size=0x4
    unsigned long StartingSector;// Offset=0x18 Size=0x4
    unsigned long NumberOfFullSectors;// Offset=0x1c Size=0x4
};