anchor.diff:  vfrStatementDisableIfStat :
     << 
       CIfrDisableIf DIObj; 
  -    mConstantOnlyInExpression = TRUE;
     >>
     L:DisableIf                                          << DIObj.SetLineNo(L->getLine()); >>
  -  vfrStatementExpression[0] ";"                        << mConstantOnlyInExpression = FALSE; >>
  +  vfrStatementExpression[0] ";" 
     ( vfrStatementStatList )*
     E:EndIf                                              << CRT_END_OP (E); >>
     ";"
  
positive.code:     vfrStatementVarStoreEfi       |
      vfrStatementVarStoreNameValue |
      vfrStatementDefaultStore      |
      vfrStatementDisableIfFormSet
    )*
    ;
  
  
negative.code: vfrStatementDisableIfQuest :
    << 
      CIfrDisableIf DIObj; 
    >>
    L:DisableIf                                          << DIObj.SetLineNo(L->getLine()); >>
    vfrStatementExpression[0] ";"
    vfrStatementQuestionOptionList
    E:EndIf                                              << CRT_END_OP (E); >>
    ;
  