[ENVIRONMENT('Interface_Module')]
MODULE Interface_Module;

{ VAX Pascal provides the method to build	}
{ interface modules and implementation		}
{ modules.  By using separate interface and	}
{ implementations, you can structure your	}
{ program so that minimal rebuilding is		}
{ required.					}
{						}
{ An "interface" module consists of		}
{ constants, types, and external		}
{ procedure/function declarations only.  Do	}
{ not include the bodies of the procedures	}
{ and functions in the interface module.  VAX	}
{ Pascal has rules that allows other modules	}
{ to implement the routine specifications	}
{ included in the interface module.		}
{						}
{ See IMPLEMENTATION_MODULE.PAS and		}
{ MAIN_PROGRAM.PAS for more information.	}

CONST
   Important_Constant = 3.1415;

TYPE
   Important_Type = ARRAY [1..512] OF CHAR;

PROCEDURE Delete_One(VAR P : Important_Type);
   EXTERNAL;

PROCEDURE Invert_One(Src : Important_Type;
                 VAR Dst : Important_Type);
   EXTERNAL;

FUNCTION Make_One : Important_Type;
   EXTERNAL;

END.