TMPL_12346_MXcf.txt
Pad for long count: 2-byte zero fill
MemberArray: list (2-byte one-based item count)
  Arch Type: 4-byte integer (char)
  Offset (0 = default): 4-byte integer (decimal)
  Length (0 = whole fork): 4-byte integer (decimal)

TMPL_5241_MXci.txt
Reserved: 4-byte zero fill
Pad: 2-byte zero fill
NumClasses: list (2-byte one-based item count)
  ClassID: 16 data bytes
  ClassVersion: 4-byte integer (decimal)
  Pad: 2-byte zero fill
  NumIntfs: list (2-byte one-based item count)
    InterfaceID: 16 data bytes
    InterfaceVersion: 4-byte integer (decimal)