About HIDE memory area

Question

Hi friends,
         I need some information about HIDE area.
         1) Is there any specific memory size for HIDE memory area.
         2) what are the values will be saved into HIDE memeoy area, like only the    values that are followed by HIDE area or the total output list will be saved.
Sathish Reddy.

Answer 1

Hi
  HIDE
The HIDE statement is one of the fundamental statements for interactive reporting.
You use the HIDE technique when creating a basic list.
It defines the information that can be passed to subsequent detail lists.
The example below presents some of the essential features of interactive reporting. The basic list contains summarized information. With the HIDE technique, it is possible to branch to more detailed information on subsequent lists.
The following program is connected to the logical database F1S.
REPORT demo_list_hide NO STANDARD PAGE HEADING.
TABLES: spfli, sbook.
DATA: num TYPE i,
      dat TYPE d.
START-OF-SELECTION.
  num = 0.
  SET PF-STATUS 'FLIGHT'.
GET spfli.
  num = num + 1.
  WRITE: / spfli-carrid, spfli-connid,
           spfli-cityfrom, spfli-cityto.
  HIDE:    spfli-carrid, spfli-connid, num.
END-OF-SELECTION.
  CLEAR num.
TOP-OF-PAGE.
  WRITE 'List of Flights'.
  ULINE.
  WRITE 'CA  CONN FROM                 TO'.
  ULINE.
TOP-OF-PAGE DURING LINE-SELECTION.
  CASE sy-pfkey.
    WHEN 'BOOKING'.
      WRITE sy-lisel.
      ULINE.
    WHEN 'WIND'.
      WRITE:  'Booking', sbook-bookid,
           /  'Date   ', sbook-fldate.
      ULINE.
  ENDCASE.
AT USER-COMMAND.
  CASE sy-ucomm.
    WHEN 'SELE'.
      IF num NE 0.
        SET PF-STATUS 'BOOKING'.
        CLEAR dat.
        SELECT * FROM sbook WHERE carrid = spfli-carrid
                            AND   connid = spfli-connid.
          IF sbook-fldate NE dat.
            dat = sbook-fldate.
            SKIP.
            WRITE / sbook-fldate.
            POSITION 16.
          ELSE.
            NEW-LINE.
            POSITION 16.
          ENDIF.
          WRITE sbook-bookid.
          HIDE: sbook-bookid, sbook-fldate, sbook-custtype,
                sbook-smoker, sbook-luggweight, sbook-class.
        ENDSELECT.
        IF sy-subrc NE 0.
          WRITE / 'No bookings for this flight'.
        ENDIF.
        num = 0.
        CLEAR sbook-bookid.
      ENDIF.
    WHEN 'INFO'.
      IF NOT sbook-bookid IS INITIAL.
        SET PF-STATUS 'WIND'.
        SET TITLEBAR 'BKI'.
        WINDOW STARTING AT 30 5 ENDING AT  60 10.
        WRITE: 'Customer type   :', sbook-custtype,
             / 'Smoker          :', sbook-smoker,
             / 'Luggage weigtht :', sbook-luggweight UNIT 'KG',
             / 'Class           :', sbook-class.
      ENDIF.
  ENDCASE.
Regards
Swathi