Page numbers in report output lists

This is an old tip which is used for showing the total page number in all the pages, say in the format Page X of Y.
The code was written in 3.1H and has been successfully used up until 4.6C.

* Write this line in Top-of-page event
write : /50(3)  sy-pagno, 'of', '***' right-justified.

* Call this form from the start-of-selection or End-of-selection event AFTER completing all the writing all the output. I.e, this form should be called at the end.

  perform display_total_page_no.



*&---------------------------------------------------------------------*
*&      Form  display_total_page_no
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
*  -->  p1        text
*  <--  p2        text
*----------------------------------------------------------------------*
form display_total_page_no.
  data:  num_pages_c(3).
  write sy-pagno to num_pages_c left-justified.
  do sy-pagno times.

* Read the line on which *** appears.
* Here the first like is assumed 
* because the Page X of Y was written 
*in the first line in top-of-page event.

    read line 1 of page sy-index.
    replace '***' with num_pages_c into sy-lisel.
    modify line 1 of page sy-index.
  enddo.
endform.