private void LoadStsh(Stream wordDocumentStream, STSH stsh)
        {
            styleDefinitionsMap = new Dictionary<ushort, StyleDefinition>();
            for (ushort istd = 0; istd < stsh.rglpstd.Length; istd++)
            {
                STD std = stsh.rglpstd[istd];
                if (std == null) continue; // skip empty

                StyleDefinition def = new StyleDefinition(this, std);
                styleDefinitionsMap.Add(istd, def);
            }

            // global/default properties
            List<Prl> defaultPrls = new List<Prl>();

            short ftcBi = stsh.stshi.ftcBi; // sprmCFtcBi
            defaultPrls.Add(new Prl(SinglePropertyModifiers.sprmCFtcBi, BitConverter.GetBytes(ftcBi)));
            short ftcAsci = stsh.stshi.stshif.ftcAsci; // sprmCRgFtc0
            defaultPrls.Add(new Prl(SinglePropertyModifiers.sprmCRgFtc0, BitConverter.GetBytes(ftcAsci)));
            short ftcFE = stsh.stshi.stshif.ftcFE; // sprmCRgFtc1
            defaultPrls.Add(new Prl(SinglePropertyModifiers.sprmCRgFtc1, BitConverter.GetBytes(ftcFE)));
            short ftcOther = stsh.stshi.stshif.ftcOther; // sprmCRgFtc2
            defaultPrls.Add(new Prl(SinglePropertyModifiers.sprmCRgFtc2, BitConverter.GetBytes(ftcOther)));
            this.defaultPrls = defaultPrls.ToArray();
        }
        internal static STSH ReadStsh(Stream s, uint stshLength)
        {
            int read;
            STSH stsh = new STSH();

            read = 0;
            ushort cbStshi = BitConverter.ToUInt16(ReadUtils.ReadExact(s, ReadUtils.WordSize, ref read), 0);

            int readPortion;
            Stshi stshi = ReadStshi(s, cbStshi, out readPortion);
            read += readPortion;

            stsh.stshi = stshi;

            stsh.rglpstd = new STD[stsh.stshi.stshif.cstd];
            for (int i = 0; i < stsh.rglpstd.Length; i++)
            {
                ushort cbStd = BitConverter.ToUInt16(ReadUtils.ReadExact(s, ReadUtils.WordSize, ref read), 0);

                if (cbStd > 0)
                {
                    STD std = ReadStd(s, cbStd,
                        stshi.stshif.cbSTDBaseInFile, out readPortion);
                    stsh.rglpstd[i] = std;
                    read += readPortion;
                }
            }

            return stsh;
        }