If you visit this site: http://support.sas.com/documentation/cdl/en/proc/70377/HTML/default/viewer.htm#n1h2bc0rkcufgwn11accg1uiksto.htm It says, Print the data set EXPREV. EXPREV contains information about a company's product order type and price per unit for two months. DOUBLE inserts a blank line between observations. The DOUBLE option has no effect on the HTML output. proc print data = exprev double; Does this not mean that the answer should actually be double and not put?
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