$$\def\|#1#2{\vbox{\kern-.2pt\hrule\kern-.2pt\hbox to#1{\kern-.2pt
 \vrule height8.5pt depth3.5pt\kern-.2pt\hfil\tt#2 \kern-.2pt\vrule\kern-.2pt}
 \kern-.2pt\hrule\kern-.2pt}}
\def\qbox{\|{25pt}} \def\Hbox{\|{50pt}} \def\wbox{\|{100pt}}
\def\g{\hfil\ignorespaces}
\lineskip0pt
\vbox{\halign{&\tt#\hfil\qquad\cr
100: \qbox0\qbox0\Hbox0&700: \qbox1\qbox0\Hbox0&800: \qbox0\qbox0\Hbox{900}&
	\\{type},,\\{link}\cr
101: \wbox{6553600}&701: \wbox{655360}&801: \wbox{655360}&\\{width}\cr
102: \wbox0&702: \wbox{32768}&802: \wbox0&\\{depth}\cr
103: \wbox{655360}&703: \wbox{327680}&803: \wbox{327680}&\\{height}\cr
104: \wbox0&704: \wbox{-327680}&804: \wbox0&\\{shift\_amount}\cr
105: \qbox1\qbox2\Hbox{200}&705: \qbox0\qbox0\Hbox{800}&
 805: \qbox0\qbox0\Hbox{10004}&\\{glue\_sign},\\{glue\_order},\\{list\_ptr}\cr
106: \wbox{10.0\g}&706: \wbox{0.0\g}&806: \wbox{0.0\g}&\\{glue\_set} (\\{real})\cr
\noalign{\smallskip}
200: \qbox7\qbox1\Hbox{10003}&\\{disc\_node},\\{replace\_count},\\{link}&
 300: \qbox{11}\qbox1\Hbox0&\\{kern\_node},\\{explicit},\\{link}\cr
201: \Hbox{300}\Hbox{10000}&\\{pre\_break},\\{post\_break}&
 301: \wbox{655360}&\\{width}\cr
\noalign{\smallskip}
400: \qbox6\qbox0\Hbox0&\\{ligature\_node},,\\{link}&
 10001: \qbox1\qbox{"f"}\Hbox{10002}&\\{font},\\{character},\\{link}\cr
401: \qbox1\qbox{11}\Hbox{10001}&\\{font},\\{character},\\{lig\_ptr}&
 10002: \qbox1\qbox{"f"}\Hbox0&\\{font},\\{character},\\{link}\cr
\noalign{\smallskip}
10000: \qbox1\qbox{"U"}\Hbox{400}&\\{font},\\{character},\\{link}&
 10003: \qbox1\qbox{"!"}\Hbox{500}&\\{font},\\{character},\\{link}\cr
500: \qbox{12}\qbox0\Hbox{600}&\\{penalty\_node},,\\{link}&
 600: \qbox{10}\qbox0\Hbox{700}&\\{glue\_node},\\{normal},\\{link}\cr
501: \wbox{5000}&\\{penalty}&601: \Hbox8\Hbox0&\\{glue\_ptr} (\\{fill\_glue}),
 \\{leader\_ptr}\cr
\noalign{\smallskip}
900:\qbox2\qbox0\Hbox0&\\{rule\_node},,\\{link}&
 10004: \qbox2\qbox{"d"}\Hbox{10005}&\\{font},\\{character},\\{link}\cr
901: \wbox{-1073741824}&\\{width} (\\{null\_flag})&
 10005: \qbox2\qbox{"a"}\Hbox0&\\{font},\\{character},\\{link}\cr
902: \wbox0&\\{depth}\cr
903: \wbox{32768}&\\{height}\cr}}$$