item
application

folder action
script

user
login item

attribute
action

domain
│├Classic domain object
│├network domain object
│├system domain object
│├local domain object
│└user domain object

QuickTime data
│├audio data
│└movie data

property list item

XML data
XML element
XML attribute

disk item
│├alias
│├disk
│├folder
│└file
│ ├file package
│ ├XML file
│ ├property list file
│ └QuickTime file
│  ├audio file
│  └movie file