\item[\code{\e( \e)}] Indicates the start and end of a group; the
contents of a group can be matched later in the string with the
\code{\e [1-9]} special sequence, described next.
-%
-\fulllineitems\item[\code{\e \e 1, ... \e \e 7, \e 8, \e 9}]
+\end{itemize}
+
+\begin{fulllineitems}
+\item[\code{\e \e 1, ... \e \e 7, \e 8, \e 9}]
Matches the contents of the group of the same
number. For example, \code{\e (.+\e ) \e \e 1} matches 'the the' or
'55 55', but not 'the end' (note the space after the group). This
groups with higher numbers can be matched using the \code{\e v}
sequence. (\code{\e 8} and \code{\e 9} don't need a double backslash
because they are not octal digits.)
-%
+\end{fulllineitems}
+
+\begin{itemize}
\item[\code{\e \e b}] Matches the empty string, but only at the
beginning or end of a word. A word is defined as a sequence of
alphanumeric characters, so the end of a word is indicated by
\item[\code{\e( \e)}] Indicates the start and end of a group; the
contents of a group can be matched later in the string with the
\code{\e [1-9]} special sequence, described next.
-%
-\fulllineitems\item[\code{\e \e 1, ... \e \e 7, \e 8, \e 9}]
+\end{itemize}
+
+\begin{fulllineitems}
+\item[\code{\e \e 1, ... \e \e 7, \e 8, \e 9}]
Matches the contents of the group of the same
number. For example, \code{\e (.+\e ) \e \e 1} matches 'the the' or
'55 55', but not 'the end' (note the space after the group). This
groups with higher numbers can be matched using the \code{\e v}
sequence. (\code{\e 8} and \code{\e 9} don't need a double backslash
because they are not octal digits.)
-%
+\end{fulllineitems}
+
+\begin{itemize}
\item[\code{\e \e b}] Matches the empty string, but only at the
beginning or end of a word. A word is defined as a sequence of
alphanumeric characters, so the end of a word is indicated by