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% cmastro.tex: Using the cmastro fonts.
%
% Run this through tex (plain TeX) to get summary of the astro option for
% using the cmastro fonts.

\input astro
%
\def\t#1{\hbox{\tt #1}} \def\cs#1{\t{\char'134 #1}}
\def\_{\t{\char'137}} \def\${\t{\char'44}}
\def\{{\t{\char'173}} \def\}{\t{\char'175}}
\def\AMS{{$\cal A$\kern-.1667em\lower.5ex\hbox{$\cal M$}\kern-.125em$\cal S$}}
\def\LaTeX{L\kern-.36em\raise.3ex\hbox{\sevenrm A}\kern-.15em\TeX}
%
\bigskip
\centerline{\bf Using the cmastro fonts}
\bigskip

	The \t{cmastro} fonts contain the special symbols
$$
\vcenter{\tabskip=1emplus1fil
	\halign to\hsize{&\hfil#\hfil\tabskip=1em&#\hfil\tabskip=1emplus1fil\cr
 \omit\span\bf Planets		&\omit\span\bf Other \cr
 \Mercury & \cs{Mercury} 	&\Sun & \cs{Sun} \cr
 \Venus & \cs{Venus} 		&\Moon & \cs{Moon} \cr
 \Earth & \cs{Earth}		\cr
 \Mars & \cs{Mars} 		&\ascnode & \cs{ascnode} \cr
 \Jupiter & \cs{Jupiter} 	&\descnode & \cs{descnode} \cr
 \Saturn & \cs{Saturn} 		\cr
 \Uranus & \cs{Uranus} 		&\VE & \cs{VE} \cr
 \Neptune & \cs{Neptune} 	&\AE & \cs{AE} \cr
 \Pluto & \cs{Pluto} 		&\circ & \cs{circ} \cr
}}
$$
	to \TeX's repertoire of characters.  They also work in sub- and
	superscripts, {\it e.g.}, \$\t{M}\_\cs{Jupiter}\$ will give
	$M_\Jupiter$.

	In order to use the fonts you must create and install \t{tfm} and
	bitmap files as well as the two \TeX\ sources \t{astro.tex} and
	\t{astro.sty} in a place where \TeX\ will find them.  Then

\item{$\bullet$} In \LaTeX\ you should use the ``\t{[astro]}'' document style
	option, {\it e.g.},
$$
 \cs{documentstyle[astro,12pt]\{article\}}
$$

\item{$\bullet$} With plain \TeX\ and \AMS-\TeX\ you should add the line 
$$
 \cs{input astro}
$$
	in the preamble of your document.

\bye