Opened "tattr2.h5" with sec2 driver.
dset                     Dataset {2/2}
    Attribute: array {2}
        Type:      [3] 32-bit little-endian integer
    Attribute: array2D {3, 2}
        Type:      [3] 32-bit little-endian integer
    Attribute: array3D {4, 3, 2}
        Type:      [3] 32-bit little-endian integer
    Attribute: bitfield {2}
        Type:      8-bit bitfield
    Attribute: bitfield2D {3, 2}
        Type:      8-bit bitfield
    Attribute: bitfield3D {4, 3, 2}
        Type:      8-bit bitfield
    Attribute: compound {2}
        Type:      struct {
                   "a"                +0    8-bit integer
                   "b"                +4    IEEE 64-bit little-endian float
               } 12 bytes
    Attribute: compound2D {3, 2}
        Type:      struct {
                   "a"                +0    8-bit integer
                   "b"                +4    IEEE 64-bit little-endian float
               } 12 bytes
    Attribute: compound3D {4, 3, 2}
        Type:      struct {
                   "a"                +0    8-bit integer
                   "b"                +4    IEEE 64-bit little-endian float
               } 12 bytes
    Attribute: enum {2}
        Type:      enum 32-bit little-endian integer {
                   RED              = 0
                   GREEN            = 1
               }
    Attribute: enum2D {3, 2}
        Type:      enum 32-bit little-endian integer {
                   RED              = 0
                   GREEN            = 1
               }
    Attribute: enum3D {4, 3, 2}
        Type:      enum 32-bit little-endian integer {
                   RED              = 0
                   GREEN            = 1
               }
    Attribute: float {2}
        Type:      IEEE 32-bit little-endian float
    Attribute: float2D {3, 2}
        Type:      IEEE 32-bit little-endian float
    Attribute: float3D {4, 3, 2}
        Type:      IEEE 32-bit little-endian float
    Attribute: integer {2}
        Type:      32-bit little-endian integer
    Attribute: integer2D {3, 2}
        Type:      32-bit little-endian integer
    Attribute: integer3D {4, 3, 2}
        Type:      32-bit little-endian integer
    Attribute: opaque {2}
        Type:      1-byte opaque type
               (tag = "1-byte opaque type")
    Attribute: opaque2D {3, 2}
        Type:      1-byte opaque type
               (tag = "1-byte opaque type")
    Attribute: opaque3D {4, 3, 2}
        Type:      1-byte opaque type
               (tag = "1-byte opaque type")
    Attribute: reference {2}
        Type:      object reference
    Attribute: reference2D {3, 2}
        Type:      object reference
    Attribute: reference3D {4, 3, 2}
        Type:      object reference
    Attribute: string {2}
        Type:      2-byte null-terminated ASCII string
    Attribute: string2D {3, 2}
        Type:      2-byte null-terminated ASCII string
    Attribute: string3D {4, 3, 2}
        Type:      2-byte null-terminated ASCII string
    Attribute: vlen {2}
        Type:      variable length of
                   32-bit little-endian integer
    Attribute: vlen2D {3, 2}
        Type:      variable length of
                   32-bit little-endian integer
    Attribute: vlen3D {4, 3, 2}
        Type:      variable length of
                   32-bit little-endian integer
    Location:  1:976
    Links:     1
    Storage:   8 logical bytes, 0 allocated bytes
    Type:      32-bit little-endian integer
g1                       Group
    Attribute: array {2}
        Type:      [3] 32-bit little-endian integer
    Attribute: array2D {3, 2}
        Type:      [3] 32-bit little-endian integer
    Attribute: array3D {4, 3, 2}
        Type:      [3] 32-bit little-endian integer
    Attribute: bitfield {2}
        Type:      8-bit bitfield
    Attribute: bitfield2D {3, 2}
        Type:      8-bit bitfield
    Attribute: bitfield3D {4, 3, 2}
        Type:      8-bit bitfield
    Attribute: compound {2}
        Type:      struct {
                   "a"                +0    8-bit integer
                   "b"                +4    IEEE 64-bit little-endian float
               } 12 bytes
    Attribute: compound2D {3, 2}
        Type:      struct {
                   "a"                +0    8-bit integer
                   "b"                +4    IEEE 64-bit little-endian float
               } 12 bytes
    Attribute: compound3D {4, 3, 2}
        Type:      struct {
                   "a"                +0    8-bit integer
                   "b"                +4    IEEE 64-bit little-endian float
               } 12 bytes
    Attribute: enum {2}
        Type:      enum 32-bit little-endian integer {
                   RED              = 0
                   GREEN            = 1
               }
    Attribute: enum2D {3, 2}
        Type:      enum 32-bit little-endian integer {
                   RED              = 0
                   GREEN            = 1
               }
    Attribute: enum3D {4, 3, 2}
        Type:      enum 32-bit little-endian integer {
                   RED              = 0
                   GREEN            = 1
               }
    Attribute: float {2}
        Type:      IEEE 32-bit little-endian float
    Attribute: float2D {3, 2}
        Type:      IEEE 32-bit little-endian float
    Attribute: float3D {4, 3, 2}
        Type:      IEEE 32-bit little-endian float
    Attribute: integer {2}
        Type:      32-bit little-endian integer
    Attribute: integer2D {3, 2}
        Type:      32-bit little-endian integer
    Attribute: integer3D {4, 3, 2}
        Type:      32-bit little-endian integer
    Attribute: opaque {2}
        Type:      1-byte opaque type
               (tag = "1-byte opaque type")
    Attribute: opaque2D {3, 2}
        Type:      1-byte opaque type
               (tag = "1-byte opaque type")
    Attribute: opaque3D {4, 3, 2}
        Type:      1-byte opaque type
               (tag = "1-byte opaque type")
    Attribute: string {2}
        Type:      2-byte null-terminated ASCII string
    Attribute: string2D {3, 2}
        Type:      2-byte null-terminated ASCII string
    Attribute: string3D {4, 3, 2}
        Type:      2-byte null-terminated ASCII string
    Attribute: vlen {2}
        Type:      variable length of
                   32-bit little-endian integer
    Attribute: vlen2D {3, 2}
        Type:      variable length of
                   32-bit little-endian integer
    Attribute: vlen3D {4, 3, 2}
        Type:      variable length of
                   32-bit little-endian integer
    Location:  1:2176
    Links:     1
g2                       Group
    Location:  1:2824
    Links:     1