<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">
\input pstricks.tex


\font\titlefont = cmbx12 scaled 1440
\font\smallerfont = cmr8
\font\sc        = cmcsc10
\font\manfnt    = manfnt

\def\ttbackslash{{\tt\char'134}}
\def\ttlbrace{{\tt\char'173}}
\def\ttrbrace{{\tt\char'175}}

\def\LaTeX{L\kern-.36em\raise0.25ex\hbox{\smallerfont A}\kern-.15em\TeX}
\def\AmSTeX{A\kern-.1667em\lower.5ex%
            \hbox{M}\kern-.125emS\kern0.05em-\kern-0.20em\TeX}
\def\HyperTeX{Hyper\TeX}
\def\pdfTeX{{\sc pdf}\TeX}
\def\METAFONT{{\manfnt METAFONT}}


\def\Bullet#1{{%
      \parindent = 20pt
      \hang\indent\llap{\hbox to 20pt{\hfil$\bullet\quad$}}%
                  \ignorespaces#1\ignorespaces%
                          %%% --- 2nd \ignorespaces stops a blank line
                          %%%     appearing between an equation displayed
                          %%%     with an \eqno within a \BulletPara and the
                          %%%     next \BulletPara.
      \medskip
      \vskip-\parskip
  }}



\pretolerance=10000
\magnification = \magstep 2


\parskip=10pt
\parindent=0pt

\def\parskipamount{10pt}


\centerline{{\titlefont \TeX\ and Friends}}

\bigskip

\TeX\ is the most elegant and powerful system for computing typsetting;  it
is intended for the creation of beautiful books---especially for books
that contain a lot of mathematics.  By preparing a manuscript in \TeX\ you
will be able to tell your computer {\it exactly\/} how your text is to 
be transformed into fine quality pages.

\medskip{\bf The Name of the Game}

English words like `technology' stem from a Greek root beginning with
the letters $\tau\epsilon\chi\dots$;  this same Greek word means {\it both\/}
art and technology.  Hence the name \TeX, which is an uppercase form
of $\tau\epsilon\chi$.  

Insiders pronounce the $\chi$ of \TeX\ as a Greek chi, not as an `x', so
that \TeX\ rhymes with the word blecchhh.  It's the `ch' sound in
Scottish words like {\it loch\/}, Spanish words like {\it Rioja} and
Scouse words like {\it Birkenhead}.  When
you say it correctly to your computer, the {\sc vdu} may become slightly
moist.


\medskip{\bf Fine Control}

Notice that within `\TeX' the `E' is out of kilter.  This effect was
achieved by using a macro:
\smallskip
\hskip20pt
{\tt\ttbackslash def\ttbackslash TeX\ttlbrace 
    T\ttbackslash kern-.1667em \ttbackslash 
                  lower.5ex\ttbackslash hbox\ttlbrace E\ttrbrace%
     \ttbackslash kern-.125em X\ttrbrace}
\smallskip



\medskip{\bf Mathematics}
$$ {{{\rm d} y} \over {\rm d}x} 
     = \left\{g(x) + {y \over {y + 13}}\right\}
       \int^{\infty}_{0} {\lambda \over {y + 1}} f(x) (x + 1)\,{\rm d}x $$
\TeX produces beautiful mathematics.  Notice that the `d's within the
calculus symbols are not in (mathematical) italics and that there is a small
extra horizontal space before the `d$x$' at the right-hand-side.



\vfill\eject



\medskip{\bf TeX's Friends}

\TeX, or more accurately, Plain \TeX, has many friends.  These include 
\LaTeX, \AmSTeX, Hyper\TeX\ and \pdfTeX:


\Bullet{
    \LaTeX\ is a set of predefined macro packages which make use of 
    Plain \TeX\ easier;
  }
\Bullet{
    \AmSTeX\ adds yet more power to (Plain) \TeX's mathematical power;
  }
\Bullet{
    BiB\TeX\ helps in the compilation of a bibliography---you can:
    cite references in the text of a paper and have them automatically and
    correctly cross-referenced,  include references in your paper,  and 
    obtain them from one or more bibliographic databases; 
  }
\Bullet{
    \HyperTeX\ extends \TeX\ and \LaTeX\ so that hypertext links are 
    supported---\HyperTeX\ makes use of HyperPS;
  }
\Bullet{
    and \pdfTeX\ yields a document in Adobe's Portable Document Format, 
    extending ``ordinary'' \TeX\ with hyperlinks, text clips (notes), 
    movies, sound fragments\dots
  }
\dots and there is even \METAFONT\ which allows you to design and build your
own fonts.




\medskip{\bf Fun}

Question:  How do MS Word users organise a firing squad?\hfil\break
\vskip 3pt
\vskip -\parskip
\rotatedown{\hbox to \hsize{Answer:  First they get in a circle, \dots\hfil}}



\bigskip
\centerline{\vbox{\hrule width 4truein}}
\bigskip


And finally, for more information visit the \TeX\ Users' Group web site:
\smallskip
\hskip20pt
{\tt http://www.tug.org/}
\smallskip
but be warned, your life will never be the same again.
\bye</pre></body></html>