Explicitly point out all attributes where variable replacements might…

… be used

chapters/annotations.tex

@@ -111,7 +111,9 @@ \subsection{Annotations for Figures\doublelabel{annotations-for-figures}}
 \lstinline!Plot! isn't provided, the tool produces a default, but the default is
 allowed to be empty.  Providing the empty string as \lstinline!title! of a
 \lstinline!Plot! means that no title should be shown.  The plot title is not to
-be confused with the plot \emph{label} which is never empty, see below.
+be confused with the plot \emph{label} which is never empty, see below. Variable
+replacements, as described in \autoref{variable-replacements}, can be used in the
+\lstinline!title! of \lstinline!Figure! and \lstinline!Plot!.
 
 The \lstinline!identifier! in \lstinline!Figure! and \lstinline!Plot! is
 optional, and is intended for programmatic access.  An \lstinline!identifier!
@@ -161,6 +163,8 @@ \subsubsection{Plot Curves}\doublelabel{plot-curves}
 When \lstinline!legend! isn't provided, the tool produces a default based on
 \lstinline!x! and/or \lstinline!y!.  Providing the empty string as
 \lstinline!legend! means that the curve shall be omitted from the plot legend.
+Variable replacements, as described in \autoref{variable-replacements}, can be
+used in the \lstinline!legend! of \lstinline!Curve!
 
 \subsubsection{Axis Properties}\doublelabel{axis-properties}
 Properties may be defined for each \lstinline!Plot! axis:
@@ -180,7 +184,9 @@ \subsubsection{Axis Properties}\doublelabel{axis-properties}
 information.
 
 When an axis label isn't provided, the tool produces a default label. Providing
-the empty string as axis label means that no label should be shown.
+the empty string as axis label means that no label should be shown. Variable
+replacements, as described in \autoref{variable-replacements}, can be used in
+the \lstinline!label! of \lstinline!Axis!
 
 \subsubsection{Variable Replacements}\doublelabel{variable-replacements}
 In most places where text is displayed (\lstinline!title!, \lstinline!caption!, \lstinline!legend!, \lstinline!label!),