\documentclass[a4paper]{book}
\usepackage{xcolor}
\usepackage{graphics}
\usepackage{latexsym}
\usepackage{marvosym}
\begin{document}
   

   
   \begin{titlepage}
   
      
   \begin{center}
   \sffamily\bfseries\LARGE{xmldoc styles check}
   \end{center}

   
   \end{titlepage}


   
   \chapter{The only chapter}

         \begin{itshape}emph\end{itshape} for emphasized.
      
         \begin{bfseries}strong\end{bfseries} is usually bold.
      
         \begin{ttfamily}code\end{ttfamily} for code exeamples.
      
         \begin{slshape}remark\end{slshape} is highlighted.
      
         For $^{superscript}$
         and $_{subscript}$ text.
      
         Primary colors are \textcolor{red}{red},
         \textcolor{green}{green} and \textcolor{blue}{blue}.
      
         Sizes are \large{big} and \small{small}.
      

   
\end{document}