Specifications

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Syntax:
Syntax 1 (Defining a numeric function):
SUB subname [(dummyparameter[,dummyparameter]...)]
Syntax 2 (Exiting from the function block prematurely):
EXIT SUB
Syntax 3 (Ending the function block):
END SUB
Syntax 4 (Calling a function):
[CALL] subname[(realparameter[,realparameter]...)]
Parameter:
subname
Real function name
dummyparameter
A non-array integer variable, a non-array real variable, or a non-array string
variable.
realparameter
A numeric or string expression.
User-defined function statement
SUB...END SUB
Names and defines user-defined function SUB.