Applied RC0 changes, removing explicit reference to extensions.

	 \wref{core:SIGN}{SIGN}).

\end{itemize}

The following specific ambiguous conditions are have been introduced

as a consequence of specific extensions.

\begin{description}

% ==== X:Deferred ====

\item[\textsf{X:deferred}] ~

\begin{itemize}

\item access to a deferred word, a word defined by \wref{core:DEFER}{DEFER},

	which has yet to be assigned to an \param{xt}.

% ==== X: Escaped Strings ====

\item[\textsf{X:escaped-strings}]~

\begin{itemize}

	\item \bs{x} is not followed by two hexadecimal characters (\wref{core:Seq}{}).

	\item a \bs{} is placed before any character, other than those defined in

		\wref{core:Seq}{}.

\end{itemize}

\end{description}

\subsection{Other system documentation} % 4.1.3