Some thoughts on how ScratchPad/UIByTheUser might be implemented on the AndersFeder/SemanticSpace:

• Proper accessible-ontologies would be created, with vocabularies for:
  • Web browsers
  • E-mail clients
  • Word processors
  • Media players
  • ect.
• Special applications could have dedicated vocabularies
• Accessibles would be asserted as RDF constructs in the space
• One or more agents would transform the accessibles into UI