To analyze a different data set, select the keyword 'Data set:' in SAS/LAB software's main window or select 'New' from the File pull-down menu. This brings up a selection list of available data sets. To create a new data set, press the button at the bottom of the data set list.
When you use a data set, SAS/LAB software stores information about how you analyzed it. The next time you use that data set, the software retrieves its stored information so that you can begin where you left off.