Clarify that it's an error if cref does not designate a scalar variable

otronarp · Aug 10, 2020 · 1b616ec · 1b616ec
1 parent bf43dbc
commit 1b616ec
Showing 1 changed file with 2 additions and 3 deletions.
diff --git a/chapters/annotations.tex b/chapters/annotations.tex
@@ -165,9 +165,8 @@ \subsubsection{Plot Curves}\doublelabel{plot-curves}
 \end{lstlisting}
 
 The mandatory \lstinline!x! and \lstinline!y! expressions are restricted to be
-component references refering to a scalar variable or \lstinline!time!. If
-\lstinline!x! or \lstinline!y! does not designate a variable the behavior is
-unspecified.
+component references refering to a scalar variable or \lstinline!time!. It
+is an error if \lstinline!x! or \lstinline!y! does not designate a scalar variable.
 
 When \lstinline!legend! isn't provided, the tool produces a default based on
 \lstinline!x! and/or \lstinline!y!.  Providing the empty string as