6.1.6.1 The Procedure

     procedure procedure_identifier;
     declaration_part
     begin
       statement_part
     end;

or with a parameter list:

     procedure procedure_identifier (parameter_list);
     declaration_part
     begin
       statement_part
     end;

A procedure is quite like a sub-program: The declaration_part consists of label, constant, type, variable or subroutine declarations in free order. The statement_part consists of a sequence of statements. If parameter_list is specified, parameters can be passed to the procedure and can be used in statement_part. A recursive procedure call is allowed.

See also

The Function, Subroutine Parameter List Declaration