void ReadFrom(BinaryReader reader)
{
long tableStartAt = reader.BaseStream.Position;
//
ushort posClassRuleCnt = reader.ReadUInt16();
ushort[] posClassRuleOffsets = Utils.ReadUInt16Array(reader, posClassRuleCnt);
PosClassRules = new PosClassRule[posClassRuleCnt];
for (int i = 0; i < posClassRuleOffsets.Length; ++i)
{
//move to and read
PosClassRules[i] = PosClassRule.CreateFrom(reader, tableStartAt + posClassRuleOffsets[i]);
}
}
