code: function (subject) {
      var kb = UI.store
      var t = kb.findTypeURIs(subject)
      if (t['http://www.w3.org/2005/01/wf/flow#Task'] ||
        kb.holds(subject, UI.ns.wf('tracker'))) return 'issue' // in case ontology not available
      if (t['http://www.w3.org/2005/01/wf/flow#Tracker']) return 'tracker'
      // Later: Person. For a list of things assigned to them,
      // open bugs on projects they are developer on, etc
      return null // No under other circumstances (while testing at least!)
    }
docs: Does the subject deserve an issue pane?