private static Ptg ReadRefPtg(byte[] formulaRawBytes)
 {
     ILittleEndianInput in1 = new LittleEndianByteArrayInputStream(formulaRawBytes);
     byte ptgSid = (byte)in1.ReadByte();
     switch (ptgSid)
     {
         case AreaPtg.sid: return new AreaPtg(in1);
         case Area3DPtg.sid: return new Area3DPtg(in1);
         case RefPtg.sid: return new RefPtg(in1);
         case Ref3DPtg.sid: return new Ref3DPtg(in1);
     }
     return null;
 }
        /**
         * Constructs a Name record and Sets its fields appropriately.
         *
         * @param in the RecordInputstream to Read the record from
         */
        public NameRecord(RecordInputStream ris)
        {
            byte[] remainder = ris.ReadAllContinuedRemainder();
            ILittleEndianInput in1 = new LittleEndianByteArrayInputStream(remainder);
            field_1_option_flag                 = in1.ReadShort();
		    field_2_keyboard_shortcut           = (byte)in1.ReadByte();
		    int field_3_length_name_text        = in1.ReadByte();
		    int field_4_length_name_definition  = in1.ReadShort();
		    field_5_externSheetIndex_plus1      = in1.ReadShort();
		    field_6_sheetNumber                 = in1.ReadUShort();
		    int field_7_length_custom_menu      = in1.ReadUByte();
		    int field_8_length_description_text = in1.ReadUByte();
		    int field_9_length_help_topic_text  = in1.ReadUByte();
		    int field_10_length_status_bar_text = in1.ReadUByte();

		    //store the name in byte form if it's a built-in name
		    field_11_nameIsMultibyte = (in1.ReadByte() != 0);
		    if (IsBuiltInName) {
			    field_12_built_in_code = (byte)in1.ReadByte();
		    } else {
			    if (field_11_nameIsMultibyte) {
                    field_12_name_text = StringUtil.ReadUnicodeLE(in1, field_3_length_name_text);
			    } else {
                    field_12_name_text = StringUtil.ReadCompressedUnicode(in1, field_3_length_name_text);
			    }
		    }
          int nBytesAvailable = in1.Available() - (field_7_length_custom_menu
				+ field_8_length_description_text + field_9_length_help_topic_text + field_10_length_status_bar_text);
		    field_13_name_definition = SSFormula.Formula.Read(field_4_length_name_definition, in1, nBytesAvailable);

		    //Who says that this can only ever be compressed unicode???
            field_14_custom_menu_text = StringUtil.ReadCompressedUnicode(in1, field_7_length_custom_menu);
            field_15_description_text = StringUtil.ReadCompressedUnicode(in1, field_8_length_description_text);
            field_16_help_topic_text = StringUtil.ReadCompressedUnicode(in1, field_9_length_help_topic_text);
            field_17_status_bar_text = StringUtil.ReadCompressedUnicode(in1, field_10_length_status_bar_text);

        }