--- loncom/html/adm/help/tex/Spreadsheet_Referencing_Cells.tex	2006/08/08 17:47:27	1.4
+++ loncom/html/adm/help/tex/Spreadsheet_Referencing_Cells.tex	2010/08/23 16:16:18	1.5
@@ -2,9 +2,11 @@
 
 \textbf{Cells}
 
-Cells may be specified by simply writing their name.  \texttt{A17} will be
-replaced with the value in row A column 17 before the Perl is evaluated.
+Cells may be specified by simply writing their name enclosed in either single quotes or double quotes. 
+For instance, \texttt{'A17'} and \texttt{"A17"} will be
+replaced with the value in row $A$ column 17 before the Perl command is evaluated.
 
+\noindent
 \textbf{Ranges}
 
 Ranges \index{ranges, spreadsheet} specify rectangles of various shapes
@@ -13,21 +15,21 @@ Ranges must be enclosed in quotes.  Exam
 
 \begin{itemize}
 
-\item \textbf{``*''} - all rows, all columns 
-\item \textbf{``B*''} - all rows in column B 
-\item \textbf{``*5''} - all columns in row 5 
-\item \textbf{``C5''..``F25''} - all cells in the rectangle between C5 and F25
+\item \texttt{'*'} - all rows, all columns 
+\item \texttt{'B*'} - all rows in column B 
+\item \texttt{'*5'} - all columns in row 5 
+\item \texttt{'C5'..'F25'} - all cells in the rectangle between C5 and F25
 
 \end{itemize}
 
-Many functions accept ranges. For example, \&SUM(``d*'') will add 
-up all cells in column d.
+Many functions accept ranges, see \ref{Spreadsheet_Functions}. For example, \texttt{\&SUM('d*')} will add up all cells in column $d$.
 
+\noindent
 \textbf{Special References}
 
 There is an additional means of referencing cells most used in the 
 \textbf{template row} (\ref{Spreadsheet_Template_Row}).  
-By using a ``\#'' in the place of a row number
+By using a '\#' in the place of a row number
 the spreadsheet will replace the \# with the current row number.  For example
-\texttt{B\#} will be replaced with the contents of cell B7 in the row 7 and
-the contents of B8 in row 8.
+\texttt{'B\#'} will be replaced with the contents of cell $B7$ in the row 7 and
+the contents of $B8$ in row 8.