Understanding the Interactive Matrix Language

Types of Statements

Statements in SAS/IML software can be classified into three general categories:

Control Statements
	direct the flow of execution. For example, the IF-THEN/ELSE statement conditionally controls statement execution.
Functions and CALL Statements
	perform special tasks or user-defined operations. For example, the statement CALL: GSTART activates the SAS/IML graphics system.
Commands
	perform special processing, such as setting options, displaying, and handling input/output. For example, the command RESET: PRINT turns on the automatic displaying option so that matrix results are displayed as you submit statements.