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\chapter{String Services}
\label{strings}
The modules described in this chapter provide a wide range of string
manipulation operations. Here's an overview:
\begin{description}
\item[string]
--- Common string operations.
\item[re]
--- New Perl-style regular expression search and match operations.
\item[regex]
--- Regular expression search and match operations.
\item[regsub]
--- Substitution and splitting operations that use regular expressions.
\item[struct]
--- Interpret strings as packed binary data.
\item[StringIO]
--- Read and write strings as if they were files.
\end{description}