mi da sempre gli stessi warning…questo è il mio preambolo:
`\documentclass[oneside, 14pt, openany]{extbook}
\pagestyle{myheadings}
\usepackage{type1ec}
\usepackage[T1]{fontenc}
%%
%% LAYOUT TITOLO CAPITOLI
%%
\usepackage{titlesec}
\titleformat{\chapter}[display]
{\filcenter}
{\normalfont\fontsize{18}{18}\selectfont
\MakeUppercase{\chaptertitlename~\numtoword{\value{chapter}}}}
{18pt}
{\normalfont\fontsize{16}{24}\bfseries}
\newcommand{\numtoword}[1]{\ifcase#1\relax
\or primo\or secondo\or terzo\or quarto\or quinto
\or sesto\or settimo\or ottavo\or nono\or decimo\fi}
%%
%% SISTEMAZIONE CITAZIONI IN GRECO
%%
\makeatletter
\chardef\l@greek=255
\makeatother
\usepackage[polutonikogreek,italian]{babel}
\makeatletter
\newcommand{\greek@family}[5]{%
\DeclareFontShape{#1}{#2}{#3}{#4}
{<-> #51000}{}}
\DeclareFontFamily{LGR}{cmr}{}
\greek@family{LGR}{cmr}{m}{n} {grmn}
\greek@family{LGR}{cmr}{m}{sl} {grmo}
\greek@family{LGR}{cmr}{m}{it} {grmi}
\greek@family{LGR}{cmr}{m}{sc} {grmc}
\greek@family{LGR}{cmr}{m}{ui} {grmu}
\greek@family{LGR}{cmr}{bx}{sc} {grxc}
\greek@family{LGR}{cmr}{bx}{n} {grxn}
\greek@family{LGR}{cmr}{bx}{sl} {grxo}
\greek@family{LGR}{cmr}{bx}{it} {grxi}
\greek@family{LGR}{cmr}{bx}{ui} {grxu}
\DeclareFontShape{LGR}{cmr}{b}{n}
{<->ssub*cmr/bx/n}{}
\DeclareFontShape{LGR}{cmr}{b}{sc}
{<->ssub*cmr/bx/sc}{}
\makeatother
\newenvironment{greek}
{\fontfamily{cmr}\selectfont \catcode`~=11
\begin{otherlanguage*}{greek}}
{\end{otherlanguage*}}
%%
%% VARIE
%%
\usepackage{paralist}
\usepackage[latin1]{inputenc}
\usepackage{makeidx}
\usepackage{vmargin}
\setpapersize{A4}
\setmarginsrb{40mm}{35mm}{35mm}{35mm}{12pt}{11pt}{0pt}{11pt}
\usepackage{setspace}
\frenchspacing`