EXBFileProcessing
{
  bupUserRead = 256, 
  bupUserWrite = 128, 
  bupUserExecute = 64, 
  bupGroupRead = 32, 
  bupGroupWrite = 16, 
  bupGroupExecute = 8, 
  bupOtherRead = 4, 
  bupOtherWrite = 2, 
  bupOtherExecute = 1 
}

This enumeration is used by the HeaderPermissions property. The meaning of each member of this enumeration can be found in this property's topic.