PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Saving, loading, printing, and other features are already available in the Nano-Sheets app. You can create your own functions that use any of the features of the REBOL language to process cell data (math, graphics, parse, native dialogs and GUI interfaces, Internet connectivity, file and network protocols to connect with data sources, etc.).
http://www.w3.org/ns/prov#wasQuotedFrom
  • business-programming.com