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<h4 class="subsection" id="Hyphenation-1">5.1.3 Hyphenation</h4>
<a class="index-entry-id" id="index-hyphenation"></a>

<p>When an output line is nearly full, it is uncommon for the next word
collected from the input to exactly fill it&mdash;typically, there is room
left over only for part of the next word.  The process of splitting a
word so that it appears partially on one line (with a hyphen to indicate
to the reader that the word has been broken) with its remainder on the
next is <em class="dfn">hyphenation</em>.  Hyphenation points can be manually
specified; GNU <code class="code">troff</code> also uses a hyphenation algorithm and
language-specific pattern files (based on those used in TeX) to
decide which words can be hyphenated and where.
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<p>Hyphenation does not always occur even when the hyphenation rules for a
word allow it; it can be disabled, and when not disabled there are
several parameters that can prevent it in certain circumstances.
See <a class="xref" href="Manipulating-Hyphenation.html">Manipulating Hyphenation</a>.
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