% This macro source file is from the four volume series
% "TeX in Practice" by Stephan von Bechtolsheim, published
% 1993 by Springer-Verlag, New York.
% Copyright 1993 Stephan von Bechtolsheim.
% No warranty or liability is assumed.
% This macro may be copied freely if no fees other than
% media cost or shipping charges are charged and as long
% as this copyright and the following source code itself
% is not changed. Please see the series for further information.
%
% Version: 1.0
% Date: May 1, 1993
%
%
% This source code is documented in 37.1.1, p. IV-160.
% Original source in file "o4.TEX", starting line 69.
\wlog{L: "out2-or.tip" ["o4.TEX," l. 69, p. IV-160]}%
% This file DOES NOT belong to format "texip."
\catcode`\@ = 11
\newbox\@LeftColumnBox
\newbox\@RightColumnBox
\newdimen\@PageWidth
\def\SetUpDC #1#2#3{%
   \@PageWidth = #1
   \hsize = #2
   \vsize = #3
}
\def\@PageLine{\hbox to \@PageWidth}
\def\Header{%
   \@PageLine{%
       \it Some Header Text\hfil
       \PrintCurrentMonth\space \the\day, \the\year,
       Page~\the\pageno
   }%
}
\topskip = 10pt plus 60pt
\let\@ColumnMode = L
\def\supereject{%
   \eject
   \if\@ColumnMode R
       \hbox{}
       \vfill\eject
   \fi
   \end
}
\output = {
   \if\@ColumnMode L
       \global\setbox\@LeftColumnBox = \vbox to \vsize{
           \unvbox 255
           \vfil
       }
       \global\wd\@LeftColumnBox = \hsize
       \global\let\@ColumnMode = R
   \else
       \setbox\@RightColumnBox = \vbox to \vsize{
           \unvbox 255
           \vfil
       }
       \wd\@RightColumnBox = \hsize
       \shipout\vbox{
           \Header
           \vskip 24pt
           \@PageLine{%
               \box\@LeftColumnBox
               \hfil
               \box\@RightColumnBox
           }
       }
       \advancepageno
       \global\let\@ColumnMode = L
   \fi
}
\catcode`\@ = 12