🚀 go-pugleaf

 Somebody knows how to number subsubsection titles, both in the body of the text and in the table of contents, with a book.sty document style (fbook.sty, or another document style, ...)  ??????

 I need in my text both the following sections:

 - \chapter
 - \section
 - \subsection
 - \subsubsection


PS.
  the option:   \setcounter{tocdepth}{4}
  puts the subsubsection titles only in the table of contents,
  the subsubsection numbers don't appear in the body of the text.


 If there is any help, please mail to:
    
           malek@lamaleph.inria.fr


  Thanks.