A control language (CL) command is a single statement
to request a system function.
CL command names
The command name identifies the function that will be performed
by the program that is called when the command is run. Most command names
consist of a combination of a verb (or action) followed by a noun or phrase
that identifies the receiver of the action (or object being acted on): (command
= verb + object acted on).
CL command parts
The parts of a command include a command label (optional), a command
name (mnemonic), and one or more parameters. The parameter includes a keyword
and a value.
CL command definition
Command definition allows system users to create additional commands
to meet specific application needs. These commands are similar to the system
commands.
CL command coding rules
This summary of general information about command coding rules
can help you properly code CL commands.
CL commands that operate on multiple objects
In addition to the commands that operate on single object
types, there are commands that operate on several object types. These
commands are more powerful because they can operate on several objects
of different types at the same time.