builtin-packages

(1 .  ; version number

 (((22 0) .
   ((erc . [(5 2) nil "An Emacs Internet Relay Chat client"])
    ;; The external URL is version 1.15, so make sure the built-in one
    ;; looks newer.
    (url . [(1 16) nil "URL handling libary"])))
  ((23 0) .
   (;; Strangely, nxml-version is missing in Emacs 23.
    ;; We pick the merge date as the version.
    (nxml . [(20071123) nil "Major mode for editing XML documents."])
    (bubbles . [(0 5) nil "Puzzle game for Emacs."])
    (ruby-mode . [(1 0)
         nil "Major mode for editing Ruby files" single])))))