bachotex2007-pawel-jackowski-pearl4.tex
bachotex2007-pawel-jackowski-pearl4.tex
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%%% \vbox height vs. \vtop depth % \vbox usually inherits its depth from the last box or rule of the vertical % list it contains. Conversely, \vtop has usually the height of the first box % or rule of the vertical list it contains. However, using whatsits as the % first/last item of the box may lead to surprises. \def\what{\special{}} \setbox0=\vbox{Aqq \what} \the\ht0, \the\dp0 \setbox0=\vtop{\what Aqq} \the\ht0, \the\dp0 % \vbox still obeys the rule, although there is a whatsit after the very % last box on the list. But \vtop has always zero height if its first item is a % whatsit. \end
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