!7

abstract !include once #1016122 // TextArea
 
sclass NewFacts > TextArea {
  void add(S s) {
    if (nemptyAfterTrim(s))
      setText(appendNewLineIfNempty(text) + s);
  }
  
  void remove(S s) {
    setText(listWithoutSet(lines(text), lines(s)));
  }
}