A subroutine procedure is a sequence of ViviFire statements between the lines
The subroutine procedure does a task, then returns control to the code that called it (known as the “caller”). The procedure does not return a value to the caller.
Each time the procedure is called, its statements are executed, beginning with the first executable statement after
Execution usually continues until it encounters
But it can be stopped by one of the statements
Exit Sub or
You can define a
Sub procedure in modules, classes, objects, and traits.
It is private, meaning that it can be called only by other code in the enclosing class, object, or trait, or module if not otherwise enclosed.
Sub procedure can take arguments, such as constants, variables, or expressions, which are passed to it by the caller.
Sub sub_name [ parameter_list ] ' statements End Sub
Parameters as local variables
Example of declaration and call