What is in a SAS data set?
Say someone else built a SAS data set that you needed to use. Or, say you forgot the variables that you used when you built a data set.
How do you find out what is in a SAS data set?
(Assuming that you do not have access to the code used to build the data set; that would be too easy.)
As you know, Proc Print can be used to print out all of the values of all of the variables. This could be quite a bit of output for a large data set (one with lots of observations or variables).
Recall that a SAS data set is made up of two parts: the data, the dictionary.