anchor.diff:  }
   
   clickOn checkbox    // Uncheck the checkbox
  -OR
  +//  OR
   uncheck checkbox    // Uncheck the checkbox or throw and exception if the checkbox is already checked
   -------------------------------------------------------------------------------
   
  
positive.code: }
  
  clickOn radio_unchecked     // Check the radio
  OR
  check radio_unchecked       // Check the radio
  
  check radio_checked         // Throw an exception (the radio is already checked)
  
negative.code: }
  
  clickOn checkbox    // Check the checkbox
  //  OR
  check checkbox      // Check the checkbox or throw and exception if the checkbox is already checked
  -------------------------------------------------------------------------------
  
  