Program Control Statements and Procedures: table

Name	Description
Statements
CASE	Within a SELECT CASE structure, marks a block of statements that are executed if an associated value matches the SELECT CASE expression.
CONTINUE	Often used as the target of GOTO or as the terminal statement in a DO loop; performs no operation.
CYCLE	Advances control to the end statement of a DO loop; the intervening loop statements are not executed.
DO	Evaluates statements in the DO loop, through and including the ending statement, a specific number of times.
DO WHILE	Evaluates statements in the DO WHILE loop, through and including the ending statement, until a logical condition becomes .FALSE..
ELSE	Introduces an ELSE block.
ELSE IF	Introduces an ELSE IF block.
ELSEWHERE	Introduces an ELSEWHERE block.
END	Marks the end of a program unit.
END DO	Marks the end of a series of statements following a DO or DO WHILE statement.
END FORALL	Marks the end of a series of statements following a block FORALL statement.
END IF	Marks the end of a series of statements following a block IF statement.
END SELECT	Marks the end of a SELECT CASE statement.
END WHERE	Marks the end of a series of statements following a block WHERE statement.
EXIT	Leaves a DO loop; execution continues with the first statement that follows.
FORALL	Controls conditional execution of other statements.
GOTO	Transfers control to a specified part of the program.
IF	Controls conditional execution of other statements.
PAUSE	Suspends program execution and, optionally, executes operating-system commands.
SELECT CASE	Transfers program control to a block of statements, determined by a controlling argument.
STOP	Terminates program execution.
WHERE	Controls conditional execution of other statements.
Procedure
EXIT	(Intrinsic Subroutine) Terminates the program, flushes and closes all open files, and returns control to the operating system.

The portability routines RAISEQQ, SIGNALQQ, and SLEEPQQ also supply this functionality.