CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
    EXPORTING
      i_callback_program       = gf_repid
...
      i_callback_top_of_page   = 'TOP_OF_PAGE'
...
    TABLES
      t_outtab                 = tabl
    EXCEPTIONS
      program_error            = 1
      OTHERS                   = 2.

*&---------------------------------------------------------------------*
*&      Form  top_of_page
*&---------------------------------------------------------------------*
FORM top_of_page.                                           "#EC CALLED
  DATA :
           ls_line             TYPE slis_listheader,
           gt_list_top_of_page TYPE slis_t_listheader.

*-- Отчёт
  CLEAR ls_line.
  ls_line-typ  = 'H'.
  ls_line-key  = ' '.
  ls_line-info = text-t01.
  APPEND ls_line TO gt_list_top_of_page.
*-- ...
  CLEAR ls_line.
  ls_line-typ  = 'S'.
  ls_line-key  = text-t02.
  ls_line-info = '......'.
  APPEND ls_line TO gt_list_top_of_page.


  CALL FUNCTION 'REUSE_ALV_COMMENTARY_WRITE'
    EXPORTING
      it_list_commentary = gt_list_top_of_page.
ENDFORM.                    "top_of_page