-%\includeonly{macro,preambolo,pref,intro,process,prochand,fileintro,filedir,
-% fileunix,filestd,system,system,signal,session,fileadv,ipc,errors,
-% ringraziamenti,fdl}
+% \includeonly{macro,preambolo,pref,intro,process,prochand,filedir,
+% fileunix,filestd,system,signal,session,fileadv,ipc,errors,
+% ringraziamenti,fdl}