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% 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 8.1.4, p. I-265.
% Original source in file "vboxes2.TEX", starting line 222.
\wlog{L: "vtbox.tip" ["vboxes2.TEX," l. 222, p. I-265]}%
% This file DOES belong to format "texip."
\catcode`\@ = 11
\newdimen\@VtboxDim
\newbox\@VtboxBox
\def\Vtbox #1#2{%
    \@VtboxDim = \ht#1%
    \advance\@VtboxDim by \dp#1%
    \setbox\@VtboxBox = \vbox{\unvcopy #1}%
    \advance\@VtboxDim by -\ht\@VtboxBox
    \advance\@VtboxDim by -\dp\@VtboxBox
    #2\setbox #1 = \vtop spread \@VtboxDim {\unvbox #1}%
}
\catcode`\@ = 12