%%
%% This is file `obox.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% slidenotes.dtx  (with options: `obox')
%% Copyright (C) 1993-1996 Hans van der Meer. All rights reserved.
%% File: slidenotes.dtx Copyright (C) 1993-1996 Hans van der Meer
%%
\NeedsTeXFormat{LaTeX2e}[1995/12/01]
\ProvidesClass{obox}[1995/09/04 vs 1.2  Oval box change]
\def\@pickonedim#1{\@ifnextchar(%)
    {\@@pickonedim{#1}}{#1}}
\def\@@pickonedim#1(#2){#1{#2\unitlength}}
\gdef\oval{\@ifnextchar[%]
    {\@oval}{\@oval[o]}}
\gdef\@oval[#1](#2,#3){\@ifnextchar[%]
    {\@@oval[#1](#2,#3)}{\@@oval[#1](#2,#3)[]}}
\gdef\@@oval[#1](#2,#3)[#4]{\begingroup\boxmaxdepth \maxdimen
  \@ovttrue \@ovbtrue \@ovltrue \@ovrtrue
  \@tfor\reserved@a :=#4\do{\csname @ov\reserved@a false\endcsname}%
  \@ovxx #2\unitlength \@ovyy #3\unitlength
  \@tempdimb \ifdim\the@ovalradius=\z@
    \ifdim \@ovyy >\@ovxx \@ovxx \else \@ovyy \fi
    \else \the@ovalradius \fi
  \advance \@tempdimb -\tw@\p@
  \@getcirc \@tempdimb
  \@ovro \ht\@tempboxa \@ovri \dp\@tempboxa
  \@ovdx\@ovxx \advance\@ovdx -\@tempdima \divide\@ovdx \tw@
  \@ovdy\@ovyy \advance\@ovdy -\@tempdima \divide\@ovdy \tw@
  \@circlefnt \setbox\@tempboxa
  \hbox{\if@ovr \@ovvert32\kern -\@tempdima \fi
  \if@ovl \kern \@ovxx \@ovvert01\kern -\@tempdima \kern -\@ovxx \fi
  \if@ovt \@ovhorz \kern -\@ovxx \fi
  \if@ovb \raise \@ovyy \@ovhorz \fi}%
  \advance\@ovdx\@ovro \advance\@ovdy\@ovro
  \if#1t\@ovdx\z@\@ovdy\tw@\@ovdy\fi
  \if#1b\@ovdx\z@\@ovdy\z@\fi
  \if#1c\@ovdx\z@\fi
  \if#1n\@ovdx\z@\@ovdy\dp\@tempboxa\fi
  \ht\@tempboxa\z@ \dp\@tempboxa\z@
  \@put{-\@ovdx}{-\@ovdy}{\box\@tempboxa}%
  \endgroup}
\def\obox{\@ifnextchar[%]
    {\@obox}{\@@obox[][]}}
\def\@obox[#1]{\@ifnextchar[%]
    {\@@obox[#1]}{\@@obox[#1][]}}
\def\@@obox[#1][#2]#3{%
  \begingroup
    \@ifemptyarg{#1}{}{\ovalradius{#1}}%
    \setbox\z@\hbox{\advance\fboxsep\@wholewidth \fboxrule\z@ \fbox{#3}}%
    \dimen@\ht\z@ \advance\dimen@\dp\z@ #2\let\unitlength\@empty
    \leavevmode\oval[n](\wd\z@,\dimen@)\box\z@
  \endgroup}
\def\ovalradius{\@pickonedim\@ovalradius}
\def\@ovalradius#1{\@tempdima#1\relax
    \edef\the@ovalradius{\number\@tempdima sp}\ignorespaces}
\def\ovalfraction#1{%
    \edef\the@ovalradius{#1\noexpand\@tempdimb}\ignorespaces}
\ovalradius{0pt}                % initialisation
\endinput
%%
%% End of file `obox.sty'.