anchor.diff:    | N:Number                                        << $SubClass |= _STOU16(N->getText()); >>
     ;
   
  -vfrStatementDisableIfFromSet :
  +vfrStatementDisableIfFormSet :
     << CIfrDisableIf DIObj; >>
     D:DisableIf                                       << DIObj.SetLineNo(D->getLine()); >>
     vfrStatementExpression[0] ";"
  
positive.code: #token Title("title")                           "title"
  #token FormId("formid")                         "formid"
  #token OneOf("oneof")                           "oneof"
  #token EndoneOf("endoneof")                     "endoneof"
  #token Prompt("prompt")                         "prompt"
  #token OrderedList("orderedlist")               "orderedlist"
  #token MaxContainers("maxcontainers")           "maxcontainers"
  #token EndList("endlist")                       "endlist"
  #token EndForm("endform")                       "endform"
  #token EndOneOf("endoneof")                     "endoneof"
  #token Form("form")                             "form"
  #token Subtitle("subtitle")                     "subtitle"
  #token Help("help")                             "help"
  
negative.code:       vfrPragmaPackDefinition
      | vfrDataStructDefinition
    )*
    vfrFormSetDefinition
    << $Return = mParserStatus; >>
    ;
  
  