static SS webToCAL_visMap = caseInsensitiveSynchroMap();

static void webToCAL_visStructures(S... structures) {
  for (S s : structures) pcall {
    webToCAL_visStructures(cal_unstructure(s));
  }
}

static void webToCAL_visStructures(CirclesAndLines cal) {
  if (cal != null)
    for (Circle c : cal.circles)
      if (nempty(c.quickvis) && nempty(c.text))
        webToCAL_visMap.put(c.text, c.quickvis);
}