static L<Web> websFromCALStructures_vis(S... structures) {
  if (l(structures) == 1) structures = toStringArray(tlft_j(first(structures)));
  webToCAL_visStructures(structures);
  ret websFromCALStructures(structures);
}

static L<Web> websFromCALStructures_vis(L<S> structures) {
  ret websFromCALStructures_vis(asStringArray(structures));
}