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+<?xml version="1.0" encoding='utf-8'?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>Feyn font</title>
+<link href="http://nxg.me.uk" rev="author"/>
+<link type="text/css" rel="stylesheet" href="style.css"/>
+</head>
+
+<body>
+<h1>Feyn font</h1>
+<div class="abstract">
+<p>A package of fonts for displaying Feynman diagrams.</p>
+<p>Version 0.4.1, 2017 November 03.</p>
+<p>Persistent URL: <code style='font-size: larger;'>http://purl.org/nxg/dist/feyn</code></p>
+</div>
+
+
+<p>This package is intended to produce relatively simple Feynman diagrams,
+primarily for use within equations.</p>
+
+<p><img class="smallimage" src="sample-two-loop.png" alt="Two-loop diagram"
+/>This package differs from Thorsten Ohl’s
+<code>feynmf/feynmp</code> package (at <a href="https://ctan.org/pkg/feynmf">CTAN</a>,
+or see the
+<a href="http://www.tex.ac.uk/cgi-bin/texfaq2html?label=drawFeyn" >TeX FAQ</a>).
+FeynMP works by creating Metafont or MetaPost figures using a
+preprocessor. It’s more general than this package, but is at its best
+when creating relatively large diagrams, for figures. In contrast,
+the present system consists of a carefully-designed font with which
+you can easily write simple diagrams, within equations or within text, in a
+size matching the surrounding text size.</p>
+
+<p><img class="smallimage" src="sample-massive.png" alt="Massive fermions"
+/>The propagators and vertices which are implemented are those which
+seem to appear most often in non-figure displays (the practical
+definition of ‘appear most often’ is ‘which I wanted’ and ‘which people
+asked me for’). I have no current plans to extend the package
+further, but I’m willing add other features if you can make a case for
+them.</p>
+
+<p>There is further documentation, plus numerous examples, in the
+<a href="feyn.pdf" >package documentation</a>.</p>
+
+<p><strong>[By the way, I have little idea of how many people actually
+use this package. If you do use it, I’d be most grateful if you could
+drop me a line just to say so]</strong></p>
+
+<h2>Licence</h2>
+
+<p>This software is copyright 1991, 1994, 2001-2, 2005, 2008-17, Norman Gray..
+It is distributed under the terms of the <a href='LICENCE'>2-clause BSD Licence</a>.</p>
+
+<h2>History</h2>
+
+<dl>
+
+<!-- @RELEASENOTES@ -->
+<dt><span class='attention'>Version 0.4.1, 2017 November 3</span></dt>
+<dd><p>The package is now licensed under the terms of the 2-clause BSD licence.</p>
+<p>The only other changes from v0.4b2 are mild documentation adjustments
+(sorry for the long delay between 0.4b2 and 0.4).</p>
+<p>Version 0.4 was not widely released.</p></dd>
+
+<dt>Version 0.4b3, 2013 April 12</dt>
+<dd><ul>
+<li>Changed <code>\below</code> to <code>\belowl</code>, and added
+companion <code>\belowr</code>.</li>
+<li>Documentation updates</li>
+</ul></dd>
+
+<dt>Version 0.4b2, 2011 April 9</dt>
+<dd><p><img class="smallimage" src="sample-phi4.png" alt="Vertex"/> As
+for version 0.4b1, but with the addition of <code>aV</code> for a
+backward arrow (rarely used, but included for consistency; thanks to
+Thomas Pruschke for the suggestion). Also added: <code>flo</code> for
+the closed fermion loop, for phi^4 theory (plus <code>floV</code> and
+<code>floA</code> for completeness; thanks to Hoang Nghia Nguyen for the suggestion;
+the font should <em>now</em> be able to produce all scalar theory
+diagrams).</p></dd>
+
+<dt>Version 0.4b1, 2010 January 23</dt>
+<dd><p>Addition of the extended-size `feynx' fonts, and the <code>\FEYN</code> macro
+(thanks to Luciano Pandola for the suggestion).</p>
+<p>Adjustments to the sizing of half-loops
+(the half-loops are now squashed, though the quarter-loops aren't).
+Added ghost loops; we can now do all the diagrams of 2-loop QCD.
+The quarter-loop gluons now taper at both ends, so that two quarter-loops
+are no longer the same as one half-loop.</p></dd>
+
+
+<dt>...</dt>
+<dd><a href='release-notes.html'>Earlier release notes</a> are available</dd>
+
+</dl>
+
+<h2>Download and installation</h2>
+
+<p>The nominal distribution point for the Feyn package is CTAN,
+under <a href="https://ctan.org/pkg/feyn">fonts/feyn</a>.</p>
+
+<p>The feyn package is included in the
+<a href='http://www.tug.org/texlive/'>TeXLive distribution</a>, so
+you may have it on your machine already. If not, or if you need a
+more up-to-date version, read on.</p>
+
+<p>Since the package is on CTAN, it should be easily installed and
+updated using the tools which support this in your TeX distribution.
+For TeXLive, that's <a href='https://www.tug.org/texlive/tlmgr.html'>tlmgr</a>,
+and for MikTeX see the
+<a href='https://docs.miktex.org/faq/maintenance.html'>maintenance
+section of the manual</a>.</p>
+
+<h3>Doing the installation by hand</h3>
+
+<p>...how thoroughly old-skool of you!</p>
+
+<ol>
+<li>Download either
+<a href="feyn-0.4.1.tar.gz" >feyn-0.4.1.tar.gz</a>
+or
+<a href="feyn-0.4.1.zip" >feyn-0.4.1.zip</a>
+and unpack it.</li>
+
+<li>Run LaTeX on the file <code>feyn.ins</code> – this will unpack the
+style file <code>feyn.sty</code> amongst other files. Place this
+‘somewhere where TeX can find it’. Similarly, place the
+<code>.mf</code> files somewhere where the font-generation mechanism
+for your platform can find them. For example, in the TeXLive
+distribution, the feyn <code>*.mf</code> files appear in the directory
+<code>/usr/local/texlive/2008/texmf-dist/fonts/source/public/feyn/</code>
+and the <code>feyn.sty</code> file in
+<code>/usr/local/texlive/2008/texmf-dist/tex/latex/feyn/feyn.sty</code>,
+so that if I were installing them ‘privately’, I would put them in
+<code>/usr/local/texlive/texmf-local/fonts/source/local/feyn/</code>
+and
+<code>/usr/local/texlive/texmf-local/tex/latex/feyn/feyn.sty</code>.
+With the teTeX and TeXLive Unix distributions, the output of
+<code>kpsepath mf</code> shows the list of places where TeX will look
+for Metafont source files. The font files <em>should</em> be
+generated on the fly when you first refer to them. See also the
+relevant discussion in the TeX FAQ about <a
+href='http://www.tex.ac.uk/cgi-bin/texfaq2html?label=inst-wlcf'
+>‘where LaTeX can find them’</a>.</li>
+
+<li>Run LaTeX on the file <code>feyn.dtx</code> to obtain the
+documentation, which is prebuilt in <code><a href="feyn.pdf"
+>feyn.pdf</a></code> (this should
+generate the font files as a side-effect).</li>
+</ol>
+
+<p>You should be able to find generic instructions for installing LaTeX files at
+<a href='http://www.tex.ac.uk/cgi-bin/texfaq2html?label=installthings' >the TeX FAQ</a>.</p>
+
+
+
+<div class="signature">
+<a href="http://nxg.me.uk" >Norman Gray</a><br/>
+2017 November 03
+</div>
+
+</body>
+</html>
+
+
+<!-- Local Variables: -->
+<!-- mode: nxml -->
+<!-- End: -->