Recursion

• Collections of documents often interesting
  • Virtual library page and its descendants
  • Related pages in a directory
• Operations to perform
  • Find when any page in collection is updated
  • Archive changes to related pages as a group
  • Run HtmlDiff on pages referenced by page being compared
• What versions to compare?
  • Base on timestamps
  • Use newest archived version no newer than root page
  • AIDE uses to show available diffs and % for unavailable ones