This chapter introduced the fundamentals of the SAS/IML language, including the basic data element, the matrix. You learned several ways to create matrices: assignment statements, matrix literals, and CALL statements that return matrix results.
The chapter also introduced various types of programming statements: commands, control statements, iterative statements, module definitions, functions, and subroutines.
Chapter 4, Tutorial: A Module for Linear Regression, offers an introductory tutorial that demonstrates how to use SAS/IML software for statistical computations.