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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!
+
+
+