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Comments that describe a procedure and any preconditions or postconditions of the procedure.
A procedure that performs a specific task and then returns a value. Also referred to as "function."
A statement of what must be true at the end of the execution of a procedure if the procedure has worked properly. Also referred to as "post."
A variable declared in a procedure to accept the address of an argument. Reference parameters can alter the value of the variable arguments used in the procedure call.
A set of statements that perform specific tasks. Event procedures and general procedures are Sub procedures.
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