static SS parseTag2Answer(S snippetID) {
  SS map = new LinkedHashMap;
  for (S s : toLinesFullTrim(loadSnippet(snippetID))) {
    L<S> tok = javaTok(s);
    if (eq(get(tok, 3), "-") && isInteger(get(tok, 1)))
      s = trim(join(subList(tok, 4)));
    int i = s.indexOf("=>");
    if (i < 0) { print("? " + s); continue; }
    S tag = trim(substr(s, 0, i));
    S text = trim(substr(s, i+2));
    map.put(tag, text);
  }
  ret map;
}