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\section{Built-in Module \module{crypt}}
-\label{module-crypt}
-\bimodindex{crypt}
+\declaremodule{builtin}{crypt}
+
+\modulesynopsis{The \cfunction{crypt()} function used to check \UNIX{} passwords.}
+
This module implements an interface to the \manpage{crypt}{3} routine,
which is a one-way hash function based upon a modified DES algorithm;