The COLUMN statement uses the text in quotation marks as a spanning header. The header spans all the columns in the report because they are all included in the pair of parentheses that contains the header. The COLUMN statement associates two statistics with Sales: Sum and Pctsum. The Sum statistic sums the values of Sales for all observations that are included in a row of the report. The Pctsum statistic shows what percentage that sum is of Sales for all observations in the report. 
   column ('Individual Store Sales as a Percent of All Sales'
            sector manager sales,(sum pctsum) comment);