\documentclass{article}
\usepackage{verbatim}
\begin{document}
%% This is an example file used with the nameauth package.
%% See README and nameauth.pdf for copyright info.
%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%     Test which LaTeX engine you are using
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
\section*{Test for Latex Engine}
\begin{verbatim}
\usepackage{ifxetex}
\usepackage{ifluatex}

\ifxetex%									uses fontspec
  \usepackage{fontspec}
  \defaultfontfeatures{Mapping=tex-text}
  \usepackage{xunicode}
  \usepackage{xltxtra}
\else
  \ifluatex%								also uses fontspec
    \usepackage{fontspec}
    \defaultfontfeatures{Ligatures=TeX}
  \else%									traditional NFSS
    \usepackage[utf8]{inputenc}
    \usepackage[TS1,T1]{fontenc}
  \fi
\fi
\end{verbatim}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%     Print the first use of a name in text and margin
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%% Below we print the argument both in the text and in a margin paragraph
%% unless we are in internal vertical mode.
%%
%% This macro is suitable to replace \NamesFormat and \FrontNamesFormat.
%%
\section*{First Use in Margin}
\begin{verbatim}
\renewcommand*\NamesFormat[1]%
{%
  #1%
  \ifinner
  \else
    \marginpar{\raggedleft\scriptsize #1}%
  \fi
}
\end{verbatim}
\clearpage
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%     Print a text tag after first name use
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%% Below we print the argument in the text and then we query the text tag
%% database to see if we can print a text tag after the argument.
%%
%% This macro is suitable to replace \NamesFormat and \FrontNamesFormat.
%%
\section*{Text Tag With First Use}
\begin{verbatim}
\newif\ifNoTextTag
\makeatletter
\renewcommand*\NamesFormat[1]%
{%
  \let\ex\expandafter%
  #1%
  \if@nameauth@InName
    \ifNoTextTag
    \else
      \ex\ex\ex\ex\ex\ex\ex\NameQueryInfo\ex\ex\ex\ex\ex\ex\ex[%
        \ex\ex\ex\the\ex\ex\ex\@nameauth@toksa\ex\ex\ex]%
        \ex\ex\ex{\ex\the\ex\@nameauth@toksb\ex}\ex[\the\@nameauth@toksc]%
    \fi
  \fi
  \if@nameauth@InAKA
    \ifNoTextTag
    \else
      \ex\ex\ex\ex\ex\ex\ex\NameQueryInfo\ex\ex\ex\ex\ex\ex\ex[%
        \ex\ex\ex\the\ex\ex\ex\@nameauth@toksa\ex\ex\ex]%
        \ex\ex\ex{\ex\the\ex\@nameauth@toksb\ex}\ex[\the\@nameauth@toksc]%
    \fi
  \fi
  \global\NoTextTagfalse%
}
\makeatother
\end{verbatim}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%     Surname index entries in small caps
%%     First surname instances in text are small caps
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%% Below we create a Boolean value \ifSC and set it true. That means
%% the surnames in the index will be in small caps.
%%
%% We then create a macro \DoFormat that prints its argument in 
%% small caps if \ifSC is true, or makes no font change
%% and prints the the argument.
%%
%% \MainNameHook ignores its argument, sets \SCfalse to suppress
%% small caps in the text only, then calls the name parser used 
%% specifically in formatting hooks.
%%
%% The hook macro can replace both \MainNameHook and \FrontNameHook.
%%
\section*{Continental Small Caps}
\begin{verbatim}
\makeatletter

\newif\ifSC
\SCtrue

\def\DoFormat#1{%
  \ifSC
    \textsc{#1}%
  \else
    #1%
  \fi
}

\renewcommand*\MainNameHook[1]{\SCfalse\NameParser}
\let\FrontNameHook\MainNameHook
\end{verbatim}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%     Surname index entries in talic
%%     First surname instances in text are italic
%%     Capitalize name within that formatting
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%% Below we create a Boolean value \ifItal and set it true.
%% This will trigger italics, similar to the Continental
%% example above.
%%
%% We then create a macro \DoFormat that prints its argument in 
%% italic when \ifItal is true, or makes no font change otherwise.
%%
%% The \CP macro only capitalizies its argument inside \NamesFormat below.
%%
%% \Namesformat ignores its argument, sets \InHooktrue, then
%% calls the name parser used specifically in formatting hooks.
%%
%% The hook macro is suitable to replace \NamesFormat and \FrontNamesFormat.
%% To replace \MainNameHook and \FrontNameHook, wrap the hook macro
%% between \Italfalse and \italtrue for first-only italic.
%%
\section*{Formatting and Capping}
\begin{verbatim}
\newif\ifItal
\newif\ifFirstCap
\newif\ifInHook
\Italtrue

\def\DoFormat#1{%
  \ifItal\textit{#1}\else#1\fi
}
\def\CP#1{%
  \ifInHook
    \ifFirstCap\uppercase{#1}\else#1\fi
  \else
    #1%
  \fi
}

\newcommand*\CapMe{\FirstCaptrue}
\makeatletter%
\renewcommand*\NamesFormat[1]
{%
  \InHooktrue\NameParser\InHookfalse%
  \global\FirstCapfalse%
}
\renewcommand*\MainNameHook[1]
{%
  \Italfalse\InHooktrue\NameParser\InHookfalse%
  \global\FirstCapfalse\Italtrue%
}
\let\FrontNamesFormat\Namesformat
\let\FrontNameHook\MainNameHook
\end{verbatim}
\end{document}