static L scanStructureLog(S progID, S fileName) {
  ret scanStructureLog(getProgramFile(progID, fileName));
}

static L scanStructureLog(S fileName) {
  ret scanStructureLog(getProgramFile(fileName));
}

static L scanStructureLog(File file) {
  new L l;
  for (S s : scanLog(file)) pcall {
    l.add(unstructure(s));
  }
  ret l;
}