% 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 7.5.7, p. I-254. % Original source in file "vboxes1.TEX", starting line 2416. \wlog{L: "shiftudb.tip" ["vboxes1.TEX," l. 2416, p. I-254]}% % This file DOES belong to format "texip." \InputD{chboxd.tip} \InputD{box-mac.tip} \def\ShiftRefPointUpOrDown #1#2{% \AdvanceBoxDimension{\ht#1}{#2}% \ifdim\ht#1 < 0pt \ht#1 = 0pt \fi \AdvanceBoxDimension{\dp#1}{-#2}% \ifdim\dp#1 < 0pt \dp#1 = 0pt \fi }