+\setbox0=\hbox{\yoko \ltjsetht1=30pt}
+{\obeylines\seventt\baselineskip=10pt
+\directlua{luatexja.ext_show_node_list(tex.box[1], 'alter Yht> ', tex.print)}\par}
+
+\setbox0=\hbox{\tate \ltjsetwd1=50pt}
+{\obeylines\seventt\baselineskip=10pt
+\directlua{luatexja.ext_show_node_list(tex.box[1], 'alter Twd> ', tex.print)}\par}
+
+\setbox0=\hbox{\yoko \ltjsetht1=70pt}
+{\obeylines\seventt\baselineskip=10pt
+\directlua{luatexja.ext_show_node_list(tex.box[1], 'alter Yht> ', tex.print)}\par}
+
+%% unwrap
+\setbox2=\hbox{\yoko \copy1}
+\setbox2=\hbox{\yoko \unhbox2\global\setbox1=\lastbox}
+{\obeylines\seventt
+\directlua{luatexja.ext_show_node_list(tex.box[1], 'unwrapped> ', tex.print)}}
+
+
+
+\setbox0\hbox{\yoko a あ }\setbox1=\hbox{\tate\ltjsetht0=2pt}
+
+\fbox{\copy0}
+\vbox{\yoko\hsize=60pt\noindent\the\ltjgetwd0,\\\the\ltjgetht0,\\\the\ltjgetdp0}
+\vbox{\tate\hsize=60pt\noindent\the\ltjgetwd0,\\\the\ltjgetht0,\\\the\ltjgetdp0}
+\vbox{\dtou\hsize=60pt\noindent\the\ltjgetwd0,\\\the\ltjgetht0,\\\the\ltjgetdp0}
+%
+\ltjsetwd0=40pt
+\vbox{\yoko\hsize=60pt\noindent\the\ltjgetwd0,\\\the\ltjgetht0,\\\the\ltjgetdp0}
+\vbox{\tate\hsize=60pt\noindent\the\ltjgetwd0,\\\the\ltjgetht0,\\\the\ltjgetdp0}
+\vbox{\dtou\hsize=60pt\noindent\the\ltjgetwd0,\\\the\ltjgetht0,\\\the\ltjgetdp0}
+
+p\kern-.15em\TeX\ bug (2011-02-24)
+\setbox0=\hbox{\tate a}\fbox{\copy0}%
+\hbox{\yoko\ltjsetht0=30pt
+\hbox{\dtou\dimen0=\ltjgetht0}
+\the\ltjgetht0}% OK. 30pt