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, or Property)
CALL DWORD	Invoke a procedure (Sub, Function, Method, or Property) 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, Sub or Function
DO/LOOP	Define a group of statements that are executed repetitively
EXIT	Transfer program execution out of a block structure
FOR/NEXT	Define a loop of program statements controlled by a counter
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
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
PBMAIN	Define the initial entry-point Function for an application
PROFILE	Capture an execution time profile of the Subs, Functions, Methods, and Properties
PROPERTY/END PROPERTY	Define a PROPERTY procedure within a class
RETURN	Return from a (GOSUB) subroutine to its caller
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