--- loncom/html/adm/help/tex/Spreadsheet_HowTo.tex 2006/08/08 17:47:27 1.3 +++ loncom/html/adm/help/tex/Spreadsheet_HowTo.tex 2016/01/03 04:49:30 1.6 @@ -2,19 +2,21 @@ \textbf{Summing up columns} -To take the sum of column ``M'', for example, use \texttt{\&SUM(``M*'')}\index{SUM} +To take the sum of column M, for example, use \texttt{\&SUM(`M*')}\index{SUM} +\noindent \textbf{Spreadsheet Lists} + When you have a list of numbers in a cell, how it is displayed depends on how you separate the numbers and how Perl interprets the results. -\textbf{35 45 12} will not generate any result because this is an +\texttt{35 45 12} will not generate any result because this is an invalid Perl statement. -\textbf{35,45,12} will have a result of 12 because Perl has a comma +\texttt{35,45,12} will have a result of 12 because Perl has a comma operator similar to the comma operator\index{comma operator} in C. The comma operator is binary and returns the value on its right. Thus \texttt{\$variable = 15, 26;} assigns \texttt{\$variable} the value -26. If you need the values to all be displayed, enclose the entire +26. If you need the values to all be displayed as a string, enclose the entire cell contents in quote marks.