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Procedure statements

Procedure statements are calls to subroutines. There are different possibilities for procedure calls: A normal procedure call, an object method call (fully qualified or not), or even a call to a procedural type variable. All types are present in the following diagram.

_________________________________________________________________________________________________________ Procedure statements
-- procedure statement-|---procedure identifier-----|------------------- |---method identifier ----| -actual parameter list |qualified method identifier-| ----variable reference -----
___________________________________________________________________

The Free Pascal compiler will look for a procedure with the same name as given in the procedure statement, and with a declared parameter list that matches the actual parameter list. The following are valid procedure statements: 

 Usage;
 WriteLn('Pascal is an easy language !');
 Doit();

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