--- loncom/html/adm/help/tex/Spreadsheet_Functions.tex	2003/08/29 21:08:40	1.4
+++ loncom/html/adm/help/tex/Spreadsheet_Functions.tex	2007/01/23 01:48:37	1.8
@@ -40,9 +40,44 @@ for information on specifying cells and
   cells in range
 \index{SUMMIN}
 
-\item \texttt{\&EXT(expression)} - access to EXT function in lonnet
+\item \texttt{\&EXT(expression)} - access to EXT function in lonnet.
+Use \&EXT(``system.time'') to retrieve the current time.
 \index{EXT}
 
+\item \texttt{\&PARM(parameter)} - get the value of a specific parameter 
+\index{PARM}
+
+\item \texttt{\&MINPARM(expression)} - get the value of a parameter that 
+matches the expression that is the smallest in value (If one specified 
+'opendate' it would return the smallest opendate set on the problem.)
+\index{MINPARM}
+
+\item \texttt{\&MAXPARM(expression)} -  get the value of a parameter that 
+matches the expression that is the largest in value (If one specified 
+'opendata' it would return the largest opendate set on the problem.)
+\index{MAXPARM}
+
+\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.