+%\tracingall
+\def\showdir{\ifcase\ltjgetparameter{direction} %
+?\or D\or ?\or T\or Y\or ?\or ?\or?\or?\or?\or?\or U\fi}
+\showdir
+\hbox{\tate {\dtou 感じ\showdir}\showdir}
+\showdir
+
+
+\vbox{\tate\hsize=100mm
+日本語中に数式を打ってみる%
+$\ltjgetparameter{talbaselineshift}abc\hbox{にほんごABC\hbox{\tate たて\showdir}}\showdir$
+$$
+ \ltjgetparameter{talbaselineshift}abc\hbox{にほんごABC\hbox{\tate たて\showdir}}\showdir
+$$
+あいうえお}
+
+\vsize250mm
+\def\F#1{%
+\medskip
+\setbox0=\hbox{\csname #1\endcsname
+ \hbox{\yoko Y}\hbox{\tate T}\hbox{\dtou D}\hbox{\utod U}}
+{\obeylines\fivett\baselineskip=7pt
+\directlua{luatexja.ext_show_node_list(tex.box[0], 'hbox #1> ', tex.print)}\par}}
+
+\F{yoko}
+\F{tate}
+\F{dtou}
+\F{utod}
+
+\hbox{\inhibitglue\tate}
+\hbox{\ltjsetparameter{kanjiskip=0pt}\tate}
+
+\leavevmode\hbox{A}%
+\setbox0\hbox{}%
+\setbox1=\lastbox\the\wd1
+
+
+\vfill\eject
+
+\def\TEST#1{%
+ \tfont\A={#1;jfm=ujisv}
+ \noindent\vbox{\tate\hsize=200mm\A\parindent0pt
+ {\tentt #1}\par
+ あ,いーう.え「お」”か”左←↑→↓下
+ }\
+}
+
+\TEST{IPAexMincho:}
+\TEST{hgrkk.ttc:}
+\TEST{hgrkk.ttc:script=kana}
+\TEST{hgrkk.ttc:script=kana;language=jan}
+\TEST{hgrkk.ttc:script=hani}
+\TEST{KozMinPr6N-Regular.otf:}
+\TEST{KozMinPr6N-Regular.otf:script=kana}
+\TEST{KozMinPr6N-Regular.otf:script=kana;language=jan}
+\TEST{KozMinPr6N-Regular.otf:script=hani}
+
+\def\X#1#2#3{%
+漢字\hbox{#1◆あい#2えお◆}漢字
+\raise10pt\hbox{#1◆あい#2えお◆}漢字
+\lower10pt\hbox{#1◆あい#2えお◆}漢字#3
+漢字\hbox{\hbox{#1◆あい#2えお◆}}漢字
+\raise10pt\hbox{\hbox{#1◆あい#2えお◆}}漢字
+\lower10pt\hbox{\hbox{#1◆あい#2えお◆}}漢字#3
+漢字\vbox{\hsize80pt#1\vrule◆あい#2えお◆\hfil\vrule}漢字
+\raise10pt\vbox{\hsize80pt#1\noindent\vrule◆あい#2えお◆\hfil\vrule}漢字
+\lower10pt\vbox{\hsize80pt#1\vrule◆あい#2えお◆\hfil\vrule}漢字
+}
+
+\vfil\eject
+\vbox{\yoko
+\X\yoko Y{\hfil\break}\par\X\tate T{}\par\X\dtou D{}\par
+\X\utod U{}}
+
+\vbox{\tate
+\X\yoko Y{}\par\X\tate T{\hfil\break}\par\X\dtou D{\hfil\break}\par
+\X\utod U{\hfil\break}}
+\end