public string ToDumpString()
        {
            string s1 = Encoding.ASCII.GetString(new byte[] { mByte1 });
            string s2 = null;

            if (mPixelSx == 1)
            {
                s2 = s1 + " " + mByte1.ToHex( );
            }
            else
            {
                s2 = s1 + " " +
                     mByte1.ToHex( ) + " " +
                     mCharAttr.ToHexString();
            }
            return(s2);
        }