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File: ar.txt
Purpose: Description of the ar font and package bundle
Author: Claudio Beccari, Politecnico di Torino, Turin, Italy
E-mail: beccari@polito.it
Date: 21 april 1998 (on the 2751st anniversary of Rome)
Copyright 1998,1999,2000 Claudio Beccari
The programs contained in this bundle can be redistributed and/or
modified under the terms of the LaTeX Project Public License Distributed
from CTAN archives in directory macros/latex/base/lppl.txt; either
version 1 of the License, or any later version.
The ar font and package bundle is used to insert the "aspect ratio" symbol
in any text and formula dealing with (presumably) aeronautics. The "aspect
ratio" symbol is a ligature among a capital A and a capital R, much as the
\AE command produces a ligature among a capital A and a capital E. The
ligature AR as a means of indicating the "aspect ratio" is meaningful only
in mathematics, so that only the inclined (italic) form is available,
although the METAFONT source statements were written in such a way as to
produce the symbol in any font family, series and shape.
The .mf files are for the generation of the AR ligature in the same sizes as
the standard math-italic fonts; the ar.sty package (or option in terms of
the old LaTeX209 terminology) is for the necessary definitions. In practice
as a final user you should start your LaTeXe document with:
\documentclass[...]{book}% or whatever other document class
\usepackage{ar}
...
\begin{document}
...
\end{document}
If you prefer to use LaTeX in its 209 version or in compatibility mode, you
start with:
\documentstyle[...,ar]{book}% or whatever other document style
...
\begin{document}
...
\end{document}
The "aspect ratio" symbol is simply obtained by using the command
\AR
indifferently in math mode or in text mode.
Remember, though, that with true LaTeX209 the \AR command produces a single
sized symbol (by default 10pt), and if you want another size you have to
edit ar.sty and change the string
at 10pt
with, say,
at 12pt
This is so rudimentary that you'd better start using LaTeXe, where all the
size changes are correctly dealt with by the New Font Selection Scheme
(NFSS) without your intervention.
The bundle contains the following files:
ar5.mf
ar6.mf
ar7.mf
ar8.mf
ar9.mf
ar10.mf
ar12.mf
ar.sty
ar.txt
Move the .mf file somewhere where METAFONT can find them; this depends on
the TeX-METAFONT system you are using, but if you cope with the official
TDS directory scheme, you might place them in
\texmf\fonts\source\local\ar
(you should probably create/add the "branch" local\ar).
Similarly move ar.sty in a directory searched by LaTeX, possibly, with the
official TDS system, in
\texmf\tex\latex\misc
If your system requires it (as with MikTeX, for instance) you might choose
to run such an application as
configure -u
in order to let the executables know about the files you added and where
they are.
Depending on the system you are using, at this point you might need to
generate the font .tfm and .pk files, but if you are using a modern system
such as MikTeX, for example, you need not worry any more and you can
directly use the ar.sty package. As soon as the latex executable finds a
reference to \AR, it controls the existance of the suitable .tfm file, and,
should it be missing (not yet generated), it shells out to another
application, maketfm, that produces the necessary file and moves it in the
proper subdirectory. Similarly when you preview and/or print your document,
the accompanying drivers (yap, dvips, etc.) run the application that
produces the .pk files suited for the screen and/or the printer pixel
density.
If you do not have such modern tools, it is necessary to run METAFONT by
hand or by means of a script or batch or command file in order to produce
the fundamental .tfm files and the pixel files suited to your printer and/or
screen; your scripts should move the .tfm files where they belong, and the
.pk files where your drivers can find them. Please read the relevant
documentation that acompanies your software; it is difficult to give error
free instructions valid for any operating system, any system configuration,
and any software.
Happy LaTeXing!
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