anchor.diff:          },
   
           "ctdl:codedNotation": {
  -          "description": "A short set of alpha-numeric symbols that uniquely identifies a resource and supports its discovery.",
  -          "type": "string"
  +          "description": "A short set of alpha-numeric symbols that uniquely identifies a resource and supports its discovery."
           },
   
           "ctdl:credentialFramework": {
  -          "description": "The name of the framework to which the resource being described is aligned.",
  -          "type": "string"
  +          "description": "The name of the framework to which the resource being described is aligned."
           },
   
           "ctdl:credentialFrameworkUrl": {
  
positive.code:         },
  
          "ctdl:targetDescription": {
            "description": "The description of a node in an established educational framework.",
            "type": "string"
          },
  
          "ctdl:targetName": {
            "description": "The name of a node in an established educational framework.",
            "type": "string"
          },
  
          "ctdl:targetUrl": {
  
negative.code:         },
  
          "ctdl:keyword": {
            "description": "Key words or key phrases describing aspects of a resource considered useful for its discovery."
          },
  
          "ctdl:latestVersion": {
  