--- loncom/html/adm/help/tex/Spreadsheet_Functions.tex	2003/08/29 21:08:40	1.4
+++ loncom/html/adm/help/tex/Spreadsheet_Functions.tex	2003/09/18 20:12:39	1.5
@@ -43,6 +43,27 @@ for information on specifying cells and
 \item \texttt{\&EXT(expression)} - access to EXT function in lonnet
 \index{EXT}
 
+\item \texttt{\&SUMSEQ(column,sequence1,sequence2,sequence3,...)} -
+sum the given column across the folders or sequences listed.  
+
+When specifying a sequence use the full title.  Instead of a sequence title
+the word ``all'' can be used to sum over all sequences.  Regular expressions
+can be entered as well, if prefixed by ``regexp:''.  See below for examples.
+
+\begin{itemize}
+
+\item \texttt{\&SUMSEQ(``Z'',''Chapter 1'');}
+
+\item \texttt{\&SUMSEQ(``Z'',''Chapter 1'',''Chapter 2'',''Chapter 3'');}
+
+\item \texttt{\&SUMSEQ(``Z'',''all'');} - sum over all sequences.
+
+\item \texttt{\&SUMSEQ(``Z'',''regexp:Large Biomolecules'');} -
+ sum over all sequences which match the regular expression 
+/Large Biomolecules/.
+
+\end{itemize}
+
 \end{itemize}
 
 In addition, most non-IO Perl functions work in cells.