private void SetScorePosition(IScore score, GroupCollection parts)
{
var offset = string.IsNullOrEmpty(parts[2].Value) ? parts[1].Length : Convert.ToInt32(parts[2].Value);
var timing = parts[1].Value.Last() == '\\' ? OffsetTiming.Early : OffsetTiming.Late;
score.SetPosition(timing == OffsetTiming.Early ? -offset : offset);
}
