%% plain pTeX \tracingonline1 \showboxdepth10000 \showboxbreadth10000 \def\ADJUST{\ybaselineshift3pt\relax} % disp_node should not create JFM glue \setbox0=\vbox{% \ADJUST \noindent 「あA\par \noindent 「あA」\par \noindent 「あA\par \noindent いEお()\par \noindent ・えE\par \noindent ・うE}\showbox0 \box0 % disp_node should not create JFM glue \ybaselineshift2pt \xkanjiskip2pt \setbox6=\vbox{あA\hbox{(あ)}A\par}\showbox6 \box6 \end