\makeatletter

%%%%%
% Subscript fun

% \if@osf
% \newcommand{\element}[1]{\emph{\noosf{#1}}}%
% \newcommand{\elemrm}[1]{\noosf{#1}}%
% \else
\newcommand{\element}[1]{\emph{#1}}%
\newcommand{\elemrm}[1]{{#1}}%
% \fi

\newcommand{\rtext}[1]{\text{\upshape{#1}}}
\newcommand{\xflowid}[4]{%
(#1, #2, #3, #4)%
}%

\newcommand{\cpp}[1]{\texttt{#1}}
\newcommand{\unix}[1]{\texttt{#1}}
\newcommand{\tool}[1]{\textit{#1}}
\newcommand{\musec}{\mbox{$\mu$s}}

\newcommand{\LB}{\char`\{}
\newcommand{\RB}{\char`\}}

%\newcommand{\abbrev}[1]{\textsc{\lowercase{#1}}}
\newcommand{\abbrev}[1]{#1}
\newcommand{\IP}{\abbrev{IP}}
\newcommand{\TCP}{\abbrev{TCP}}
\newcommand{\UDP}{\abbrev{UDP}}
\newcommand{\ICMP}{\abbrev{ICMP}}
%\newcommand{\TCPIP}{\abbrev{TCP$/$IP}}
%\newcommand{\UDPIP}{\abbrev{UDP$/$IP}}
\newcommand{\TCPIP}{\abbrev{TCP$\kern-.08em/$IP}}
\newcommand{\UDPIP}{\abbrev{UDP$\kern-.08em/$IP}}
\newcommand{\DSCP}{\abbrev{DSCP}}
\newcommand{\ARP}{\abbrev{ARP}}
\newcommand{\FTP}{\abbrev{FTP}}
\newcommand{\NAT}{\abbrev{NAT}}
\newcommand{\SYN}{\abbrev{SYN}}
\newcommand{\FIN}{\abbrev{FIN}}
\newcommand{\RST}{\abbrev{RST}}
\newcommand{\ACK}{\abbrev{ACK}}

\newcommand{\Tcl}{T\kern-\p@ cl}
\newcommand{\Mbitps}{Mbit/s}

\renewcommand{\v}[1]{{\textit{#1}}}

% \caption fixes
\ifx\abovecaptionskip\@undefined
  \newskip\abovecaptionskip
  \newskip\belowcaptionskip
\fi
\abovecaptionskip=0.1\baselineskip
\belowcaptionskip=0.8\baselineskip
\long\def\@makecaption#1#2{%
  \vskip\abovecaptionskip
  \sbox\@tempboxa{{\footnotesize{\scshape #1}---#2}}%
  \ifdim \wd\@tempboxa >\hsize
    {\begin{footnotesize}{\scshape #1}---#2\par\end{footnotesize}}
  \else
    \global \@minipagefalse
    \hb@xt@\hsize{\hfil\box\@tempboxa\hfil}%
  \fi
  \vskip\belowcaptionskip}

% URL macro
{\catcode`\/\active\catcode`\_\active\catcode`\.\active
\gdef\URLslash{\futurelet\next\@@URLslash}%
\gdef\@@URLslash{\ifx\next\URLslash\char`\/\else\slash\fi}%
\gdef\URLdot{\char`\.\penalty\exhyphenpenalty}%
\gdef\URLprepare{\catcode`\/\active\catcode`\_\active\catcode`\.\active
        \let/\URLslash\let.\URLdot\def~{\char`\~}\def_{\char`\_}}}%
\gdef\URL{\bgroup\URLprepare\realURL}%
\gdef\realURL#1{\tt #1\egroup}%

% smalltt
\newenvironment{smalltt}
{\begin{small}\begin{alltt}}
{\end{alltt}\end{small}}

\let\file\emph

\makeatother
\endinput
