Avoid this program like the plague. It is the worst program I have ever come across, period. The "user interface" is impossible to interface with, and the syntax and grammar of the programming language make no sense at all (it's as if they were designed in the 1950s...probably because they were). Even something as simple as opening a SAS data file from an older version of SAS can take a veteran user several hours. (I know this from experience!) Software built with this type of incompetence and user-unfriendliness does not deserve to exist. Stata and SPSS are far better alternatives for statistical analysis.