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- PROGRAM procedure_calling_a_procedure;
-
- PROCEDURE one;
- BEGIN
- WRITELN('This is procedure one');
- END;
-
- PROCEDURE two;
- BEGIN
- one;
- WRITELN('This is procedure two');
- END;
-
- PROCEDURE three;
- BEGIN
- two;
- WRITELN('This is procedure three');
- END;
-
- BEGIN (* main program *)
- one;
- WRITELN;
- two;
- WRITELN;
- three;
- END. (* of main program *)