--- loncom/html/adm/help/tex/Function_Plot_Response_Custom_Rule.tex	2011/12/02 15:09:46	1.1
+++ loncom/html/adm/help/tex/Function_Plot_Response_Custom_Rule.tex	2016/08/20 17:48:11	1.2
@@ -4,21 +4,21 @@ Used to create rules that aren't options
 
 Available evaluation functions:
 \begin{enumerate}
-\item \&fpr\_val(``label")
+\item \&fpr\_val(``label'')
 \item \&fpr\_f(\$x)
 \item \&fpr\_dfdx(\$x)
 \item\&fpr\_d2fdx2(\$x)
-\item (\$xs,\$xe,\$ys,\$ye)=\&fpr\_vectorcoords(``Name")
-\item (\$x,\$y)=\&fpr\_objectcoords(``Name")
-\item \&fpr\_vectorlength(``Name")
-\item \&fpr\_vectorangle(``Name")
+\item (\$xs,\$xe,\$ys,\$ye)=\&fpr\_vectorcoords(``Name'')
+\item (\$x,\$y)=\&fpr\_objectcoords(``Name'')
+\item \&fpr\_vectorlength(``Name'')
+\item \&fpr\_vectorangle(``Name'')
 \end{enumerate}
 
 Returning 1 is correct, while returning 0 is incorrect.
 
 Example comparing the lengths of two vectors:
 \begin{verbatim}
-if (&fpr_vectorlength(``Normal") < &fpr_vectorlength(``Gravity"))
+if (&fpr_vectorlength("Normal") < &fpr_vectorlength("Gravity"))
 {return 1;}
 else
 {return 0;}