concept CSnippet {
  long id; // Whoa - clash with superclass field - and it still works
  S type;
  S title, md5;
  O text;
  
  S text() { ret fromUtf8_generic(text); }
  
  void legacyCompaction() {
    if (text instanceof S) cset(this, text := toUtf8_generic(text));
  }
}