State of the art

Implementations that already support Change Tracking

Attempts in the past to define a Change Tracking Markup

All information Inside the document

PI oriented

• PTC : http://www.arbortext.com/namespace/atict/change-tracking-markup-spec.html

Element oriented

• HTML : INS/DEL http://www.w3.org/TR/html401/struct/text.html#h-9.4
• PTC : http://www.arbortext.com/namespace/atict/change-tracking-markup-spec.html
• DeltaXML : http://lists.w3.org/Archives/Public/public-change/2013Feb/0019.html Further files: ODFSchemaFiles

Partial information inside the document

Information outside (Database)

Markup or Specification that uses Change Tracking

Markup or Specification that could be related to Change Tracking (Diff, etc.)