This menu contains actions which are used within site building.

Actions included are:

• Contenttypes
  The Contenttypes library, which is the entry point for managing contenttypes.
• Localization strings
  Action to manage the localization strings.
• Http Errors
  Shows a library containing the http errors that have occurred
• Subtrees
  Subtree management
• Content relation types
  Lets you manage the content relation types
• Filetypes
  Library containing the filetypes
• Mimetypes
  Library containing the mimetypes