% uuline.sty : double underlining tip by D. Arseneau
%          Usage: \documentstyle[uuline]{article} or
%                        \documentstyle[ulem,uuline]{article}
% need always "ulem.sty". \input{uuline.sty} is not allowed.
%
\ifx\markoverwith\undefined \input ulem.sty \fi
\ifx\markoverwith\undefined
 \typeout{^^J Waring: 
Either ulem.sty is old or options are not activated in it.^^J}
\fi
%
\def\uuline{\bgroup \markoverwith{\hbox
  {\kern.07em\vtop{\kern.2ex\hrule width.2em\kern1.5pt\hrule}\kern.07em}%
  }\UL@on}
% The \kern.07em is to counteract most of \kern-.1em in \markoverwith
%
\endinput
%------------------------------------------------------------------------
From: asnd@msr.triumf.ca (Donald Arseneau)
Newsgroups: comp.text.tex
Subject: Re: Double underlining...
Date: 21 Sep 1993 11:06 PST
Organization: TRIUMF: Tri-University Meson Facility

In article <27ki73$a71@uniwa.uwa.edu.au>,
      riclim@tartarus.uwa.edu.au (Siew Chan) writes...
>Can anyone suggest a way to double-underline in TeX, please?? 

If you *really* need double underlining, get ulem.sty from a CTAN
site, un-comment the optional features section to enable the extensions,
then add the definition:

\def\uuline{\bgroup \markoverwith{\hbox
  {\kern.07em\vtop{\kern.2ex\hrule width.2em\kern1.5pt\hrule}\kern.07em}%
  }\UL@on}
% The \kern.07em is to counteract most of \kern-.1em in \markoverwith

In general, it is easy to mark anythink over (or under) selected text
this way, just

\def\command{\bgroup \markoverwith{something}\UL@on}

Donald Arseneau                         asnd@reg.triumf.ca
