static ManualTailFile thingsOnScreenDefinitions_tailFile;
static SS thingsOnScreenDefinitions = synchroMap();
static Lock thingsOnScreenDefinitions_lock = lock();

static SS thingsOnScreenDefinitions() {
  lock thingsOnScreenDefinitions_lock;
  if (thingsOnScreenDefinitions_tailFile == null)
    thingsOnScreenDefinitions_tailFile = new ManualTailFile(screenClipCommentsFile(), vfAppendToLineBuffer(unquotingLineBuffer(voidfunc(S s) {
      L<S> l = safeUnstructureList(s);
      mapPut(thingsOnScreenDefinitions, first(l), second(l));
    })));

  thingsOnScreenDefinitions_tailFile.check();
  ret thingsOnScreenDefinitions;
}