10 \pageunderlay{\placeat{0pt}{0pt}{\crosshair{10pt}}}
12 \def\hd#1{\bigskip\leftline{\bf #1}\medskip}
14 \hd{Box placement: ordinary word, vbox, vtop, vhang, vhanglines}
16 \def\brum{\hbox{Brum}}
17 \def\brums{\brum\brum\brum}
20 \placeat{0pt}{0pt}{\vlap{\hbox to 0.5\hsize{\hrulefill}}}%
21 \placeat{0pt}{0pt}{\crosshair{10pt}}%
30 \noindent An~itemized list:
43 \noindent Backward-compatible lists:
46 \:It is an {\I important and popular fact} that things are not always what
47 they seem. For instance, on the planet Earth, man had always assumed
48 that he was more intelligent than dolphins because he had achieved so
49 much -- the wheel, {\colorlocal\rgb{1 0 0}New York}, wars and so on -- whilst all the dolphins
50 had ever done was muck about in the water having a good time. But
51 conversely, the \colorpush\rgb{0 0 1}dolphins\colorpop{} had always believed that they were far more
52 intelligent than man -- for precisely the same reasons.
53 \:Curiously enough, the dolphins had long known of the impending
54 destruction of the of the planet Earth and had made many attempts to
55 alert mankind to the danger; but most of their communications were
56 misinterpreted\dots{} --- Douglas Addams: HHG
60 \: Secundus %% are spaces eaten correctly?
75 Lo and behold: |a quick brown fox| {\showspacestrue |jumps over the lazy dog|} |!@#$%^&*()\_|
78 When turned off, vertical lines work as usually: $|a-b| \ge 0$.
80 Delimited verbatim: \verb@abracadabra@ or \verb|brekeke|.
84 \noindent Pre-verbatim
87 abracadabra {!@#$%^&*()\_}
96 123456789 tab45678 tab
97 123456789 tab45678 tab&space
102 \noindent Post-verbatim
104 %\verbinput{ucwmac.tex}
108 {\bo non-extended bold}
110 {\csc Caps And Small Caps}
112 ${\tt x}\in\fam\bbfam R$
114 The set{\settextsize{11}text}size macro does not strew spaces.
116 {\tt Typewriter {\it italic} {\sl slanted.}}
120 \algo{Factorial}\algalias{calculate a~factorial}
121 \algin A~non-negative integer~$n$
122 \:If $n\ge 1$: \cmt{Test if something}
125 \::Return $n \cdot \alg{Factorial}(n-1)$
126 \algout The factorial of~$n$