Simple Enumerations Helpful in Defining Ontology

For others not so simple see hierarchies.htm
For earlier discussion see typesofoccurrence.htm

This is not a PSI-tree, but it is a sketch for one that could be built to publish unique IDs for various things one can select - typically as the enumerated legal values for an attribute of a home page or DatedResource.
 
In each sub-tree below, we could add more options, and better definitions.  These are simply working examples.
  1.  Summary (of a Page Type)
    1. Modality (Format)
      1. HTML text
      2. graphic or image component
      3. spreadsheet
      4. PDF file
    2. Versioning of Recurring Pages
      1. page subject does not recur regularly
      2. page instance always cites latest data
      3. page instance should be rebuilt daily
      4. page instance should be rebuilt weekly
      5. page instance should be rebuilt monthly
    3. Attribution Policies
      1. page is not attributed
      2. page attributed to staff or analyst(s)
      3. page attributed to specific analyst(s)
    4. Tagging Policies
      1. page is not to be tagged
      2. page tagged by its attributed authors
      3. page tagged by someone else (who?)
    5. resourceData details
      1. Range = a PSI node ID from each list above
        • list is comma separated; order irrelevant
        • must indicate one PSI from each list
      2. Cardinality = exactly 1 set
      3. Updated = by UI coders only
      4. Comments = describes a page type internally
  2. Obligation (of a Company or Country)
    1. Currency Type
      1. Dollar
      2. Euro
      3. Yen
      4. Sterling
    2. Debt Markets
      1. US
      2. Europe
      3. Asia
    3. resourceData details
      1. Range = a PSI node ID from each list above
        • list is comma separated; order irrelevant
        • must indicate one PSI from each list
      2. Cardinality = 0 or more combinations as needed
      3. Updated = by Analysts only
      4. Comments = describes how bonds are sold
        • Market could be a filter on what to display
        • Currency seems related, but unsure how