Downloading two internal tables in same text file

Question

I have one internal table as like below.
Data:begin of itab1 occurs 0,
     rec(5),
     end of itab1.
Itab1 is getting updated from input text file(Continuous text).
Here Itab1 contains one record with Indicator '01 and n number of records with indicator '02'.
This needs to be seperated in to two internal tables.
data:Begin of Itab_Head occurs 0,
     Rec_ind(2) type C,
     Name(3) type C,
     end of itab_Head.
data:Begin of Itab_Item occurs 0,
     Rec_ind(2) type C,
     Id(3) type C,
     Status(10,
     end of itab_Item.
loop at itab1.
If itab1-Rec+0(2) = '01'.
   Itab_Head-Rec_Ind = itab1-rec+0(2).
   Itab_Head-Name = itab1-rec+2(3).
   Append Itab_Head.
elseif itab1-rec+0(2) = '02'.
   Itab_Item-Rec_Ind = itab1-rec+0(2).
   Itab_Item-Id = itab1-rec+2(3).
   Append Itab_Item.
endif.
endloop.
After moving to the internal tables I am doing some processing and updating the status of Itab_item.
After all these again I have to download the internal table as a text file.Now my question is.
I have values in 2 diff internal tables.How to download the two in same file.

Answer 1

See this sample code.
data: itab1 type string occurs 0 with header line,
      itab2 type string occurs 0 with header line.
itab1 = 'itab1_text'.
append itab1.
itab2 = 'itab2_text'.
append itab2.
CALL METHOD CL_GUI_FRONTEND_SERVICES=>GUI_DOWNLOAD
    exporting
      FILENAME = 'C:\ftext.txt'
    APPEND = 'X'
    changing
     DATA_TAB = itab1[].
CALL METHOD CL_GUI_FRONTEND_SERVICES=>GUI_DOWNLOAD
    exporting
      FILENAME = 'C:\ftext.txt'
      APPEND = 'X'
    changing
     DATA_TAB = itab2[].
Svetlin