// HEADER
  4 - Header (ARC0)
  4 - Number of Files (including the start and end markers)
  
  for (28){
    2 - Number of Files of type #
    }
  
// DETAILS DIRECTORY
  4 - null
  4 - null
  4 - null
  2 - Start of Directory Marker (255)
  2 - null

  // for each file
    4 - Unknown
    4 - File Offset (relative to the start of the file data)
    4 - Filename Offset (relative to the start of the filename directory)
    2 - File Type ID (1=Image (bmp/tga))
    2 - Unknown
    
  4 - null
  4 - File Data Length
  4 - Unknown (-1)
  2 - End of Directory Marker (253)
  2 - Unknown
    
// FILE DATA
  // for each file
    X - File Data
    
// FILENAMES DIRECTORY
  // for each file
    X - Filename
    1 - null Filename Terminator
    
  X - null Padding