Flow control Definition of language elements and instructions that control the flow of a program. CALLThe CALL instruction invokes a specified function or method.RETURNThe RETURN instruction gives the control of execution back to the caller, optionally returning values on the stack.CASEThe CASE instruction specifies statement blocks that must be executed conditionally.CONTINUE block-nameThe CONTINUE block-name instruction resumes execution of a loop or dialog statement.EXIT block-nameThe EXIT block instruction transfers control out of the current program block.FORThe FOR instruction executes a statement block a specified number of times.GOTOThe GOTO instruction transfers program control to a labeled line within the same program block.IFThe IF instruction executes a group of statements conditionally.LABELThe LABEL instruction declares a jump point that can be reached by a GOTO.SLEEPThe SLEEP instruction causes the program to pause for the specified number of seconds.WHILEThe WHILE statement executes a block of statements until the specified condition becomes false.