Ü  CL source program segments

Ø  Although each source statement that is entered as part of a CL source program is actually a CL command, the source can be divided into the basic parts that are used in many typical CL source programs.

·         PGM command

PGM is an Optional part for the beginning of the CL program. But it becomes mandatory if we need to pass parameter to the CL program.

·         Declare commands

This is used to declare the variables, files used in the program.

The declare commands must precede all other commands except the PGM command.

·         INCLUDE command

CL command to embed additional CL source commands at compile time

·         CL processing commands

CL commands used to process the files, variables used in the program.

·         Logic control commands

Commands used to control processing within the CL program or procedure.

·         Built-in functions

Built-in functions and operators used in arithmetic, relational or logical expressions.

·         Program control commands

CL commands used to pass control to other programs.

·         Procedure control commands

CL command to pass control to another procedure

·         ENDPGM command

Optional, End Program command.