Look for this link you will be get the clarification of datalines VS csrds Vs lines. in Short lines , cards are initially used in SAS .because the SAS algoes read length, created in form to reading long data lines in CARDIMAGE System Option and that time they use cards and lines , look this for datalines .... http://support.sas.com/documentation/cdl/en/lrdict/64316/HTML/default/viewer.htm#a000188182.htm and for cards .......... http://support.sas.com/documentation/cdl/en/lrdict/64316/HTML/default/viewer.htm#a000289371.htm and then they enhance cards in datalines........
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