restricted system commands enabled.
**basics.tex
(./basics.tex [x] [yz] <ab|cd> (x,y) (x,y)
> \a=macro:
#1->[#1].
l.5 \show\a
\show\b
> \b=macro:
#1.#2\end -><#1|#2>.
l.5 \show\a \show\b
> \l=\long macro:
#1->#1.
l.6 \long\def\l#1{#1}\outer\def\o{}\show\l
> 42.
l.7 \count1=42 \showthe\count1
> 3.5pt.
l.8 \dimen2=3.5pt \showthe\dimen2
> 1.0pt plus 2.0fil minus 3.0pt.
l.9 \skip3=1pt plus 2fil minus 3pt \showthe\skip3
> a b c.
l.10 \toks4={a b c} \showthe\toks4
> 33.
l.11 ...\count1 2 \divide\count1 3 \showthe\count1
> 2.5pt.
l.12 \advance\dimen2 -1pt \showthe\dimen2
[macro:#1->[#1]][the letter a][\relax][undefined] [\a][a][42][-17][mcmlxxxiv]
\uppercase {abc} ABC xyz
> \e=macro:
->[1]\a .
l.16 \edef\e{\a 1\noexpand\a}\show\e
[undefined][macro:->global]
> \x=undefined.
<recently read> \show \x
l.18 {\count1=7 \aftergroup\show\aftergroup\x}
TTF twob TFT \foo bar \relax
> \cd=\char"41.
l.25 \chardef\cd=65 \show\cd
\countdef\cnt=10 \cnt=5 \showthe\cnt \show\cnt
> 5.
l.25 ...ow\cd \countdef\cnt=10 \cnt=5 \showthe\cnt
\show\cnt
> \cnt=\count10.
l.25 ...ntdef\cnt=10 \cnt=5 \showthe\cnt \show\cnt
> \r=\relax.
l.26 \let\r=\relax \show\r
\let\s= a\show\s
> \s=the letter a.
l.26 \let\r=\relax \show\r \let\s= a\show\s
> \f=undefined.
<recently read> \f
l.27 \futurelet\f\show\f
\relax
[0.33.0.0.0.3])
Output written on basics.dvi (1 page, 132 bytes).