+\makeindex
+
+% Solo prima parte, scommentare
+%\includeonly{macro,preambolo,pref,intro,process,prochand,fileintro,filedir,
+% fileunix,filestd,system,system,signal,session,fileadv,ipc,errors,
+% ringraziamenti,fdl}
+
+% Solo seconda parte e appendici, scommentare
+%\includeonly{macro,preambolo,network,socket,tcpsock,sockctrl,othersock,
+% sockadv,netlayer,trasplayer,errors,ringraziamenti,fdl}
+