Flow Control

The following functions can be used to manage program execution/flow:

%DEF	Determine if an equate has been previously defined.
#IF	Define sections of source code to be compiled or ignored.
#TOOLS	Enable/disable integrated development tools in compiled code.
CALL	Invoke a procedure (Sub, Function, Method, Property, or FastProc).
CALL DWORD	Invoke a procedure (Sub, Function, Method, Property, or FastProc) indirectly.
CALLSTK	Capture a representation of the stack frames in the call stack.
CALLSTK$	Retrieve the details of a specific stack frame.
CALLSTKCOUNT	Retrieve the number of stack frames in the call stack.
CHOOSE	Return one of several values, based upon the value of an index.
CODEPTR	Obtain a 32-bit address of a label or procedure..
DLLMAIN	User-defined function called when a DLL the DLL is loaded/unloaded.
DO/LOOP	Define a group of statements that are executed repetitively.
END	Terminate the program immediately.
EXIT	Transfer program execution out of a block structure.
FASTPROC/END FASTPROC	Define a FastProc code section.
FOR/NEXT	Define a loop of program statements controlled by a counter.
FOR EACH/NEXT	Define a loop of program statements which can sequentially examine and act upon each member of a PowerCollection or LinkListCollection.
FUNCNAME$	Return the name of the current Sub, Function, Method, or Property.
FUNCTION/END FUNCTION	Define a Function block.
GOSUB	Invoke a local subroutine.
GOSUB DWORD	Invoke a local subroutine indirectly.
GOTO	Transfer program execution to the statement identified by a label.
GOTO DWORD	Transfer execution indirectly to a local label or line number.
IF	Test a condition and execute one or more program statements.
IF/END IF	Create a IF/THEN/ELSE block with multiple lines and conditions.
IIF	Return one of two values based upon a True/False evaluation.
ISFALSE	Return the logical falsity of a given expression.
ISMISSING	Determine whether an optional parameter was passed by the calling code.
ISNOTHING	Determine the current status of a given object variable.
ISOBJECT	Determine the current status of a given object variable.
ISTRUE	Return the logical truth of a given expression.
ITERATE	Start an immediate iteration of a loop structure.
LIBMAIN	User-defined function called when a DLL the DLL is loaded/unloaded.
MACRO	Define a single or multi-line text substitution block.
METHOD/END METHOD	Define a METHOD procedure within a class.
ON ERROR	Specify an error handling routine; enable/disable trapping.
ON GOSUB	Call one of several subroutines based on a numeric expression.
ON GOTO	Send program flow to one of several labels based on a value.
PBLIBMAIN	User-defined function called when a DLL the DLL is loaded/unloaded.
PBMAIN	Define the initial entry-point Function for an application.
PREFIX/END PREFIX	Executes a series of statements, each of which utilizes pre-defined source code.
PROFILE	Capture an execution time profile of the Subs, Functions, Methods, and Properties.
PROPERTY/END PROPERTY	Define a PROPERTY procedure within a class.
RESUME	Continue execution after error handling with ON ERROR GOTO.
RESUME FLUSH	Execution continues on the line immediately following the RESUME FLUSH.
RESUME NEXT	Execution continues on the line immediately following the one which generated the error.
RESUME <Label>	Execution continues at the specified label location.
RETURN	Return from a (GOSUB) subroutine to its caller.
RETURN FLUSH	Removes the most recent return address from the system stack.
SELECT CASE	Control program flow based on the value of an expression.
SLEEP	Pause the current thread for a specified number of milliseconds.
SUB/END SUB	Define a Sub (procedure) block.
TRY/END TRY	A structured method of trapping and responding to errors.
WHILE/WEND	Define a block of statements that are executed repeatedly.
WINMAIN	Define the initial entry-point Function for an application.