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-<head>
-<title>UK TeX FAQ -- question label brkinline</title>
-</head><body>
-<h3>Line-breaking in in-line maths</h3>
-<p/>TeX, by default, allows you to split a mathematical expression at
-the end of the line; it allows breaks at relational operators (like
-&#8220;=&#8221;, &#8220;&lt#60;&#8221;, etc.) and at binary operators (like &#8220;+&#8221;,
-&#8220;-&#8221;, etc.). In the case of large expressions, this can sometimes be
-a life-saver.
-<p/>However, in the case of simple expressions like a=b+c, a
-break can be really disturbing to the reader, and one would like to
-avoid it.
-<p/>Fortunately, these breaks are controllable: there are &#8220;penalties&#8221;
-associated with each type of operator: the penalty
- says how
-undesirable a break at each point is. Default values are:
-<blockquote>
-<pre>
-\relpenalty = 500
-\binoppenalty = 700
-</pre>
-</blockquote><p>
-You make the break progressively less attractive by increasing these
-values. You can actually forbid all breaks, everywhere, by:
-<blockquote>
-<pre>
-\relpenalty = 10000
-\binoppenalty = 10000
-</pre>
-</blockquote><p>
-If you want just to prevent breaks in a single expression, write:
-<blockquote>
-<pre>
-{%
- \relpenalty = 10000
- \binoppenalty = 10000
- $a=b+c$
-}
-</pre>
-</blockquote><p>
-and the original values will remain undisturbed outside the braces.
-This is tedious: there is often value in an alternative approach,
-in which you say which parts of the expression may not break whatever
-happens, and fortunately this is surprisingly easy. Suppose we want
-to defer a break until after the equality, we could write:
-<blockquote>
-<pre>
-${a+b+c+d} = z+y+x+w$
-</pre>
-</blockquote><p>
-The braces say &#8220;treat this subformula as one atom&#8221; and (in TeX at
-least) atoms don&#8217;t get split: not a <code>\</code><code>binoppenalty</code> change in sight.
-<p/><p>This question on the Web: <a href="http://www.tex.ac.uk/cgi-bin/texfaq2html?label=brkinline">http://www.tex.ac.uk/cgi-bin/texfaq2html?label=brkinline</a>
-</body>