- prerr_endline "";
- prerr_endline "usage:";
- prerr_endline "\tmatitaclean all";
- prerr_endline "\t\tcleans the whole environment";
- prerr_endline "\tmatitaclean files...";
- prerr_endline "\t\tcleans the output of the compilation of files...\n";
- prerr_endline "";