<> <> <<>> DIRECTORY BigRats, AlgebraClasses, Points, RatIntervals; RatIntervalsImpl: CEDAR PROGRAM IMPORTS BigRats, Points EXPORTS RatIntervals = BEGIN OPEN BR: BigRats, RatIntervals; <<>> RatIntervals: PUBLIC AlgebraClasses.Structure _ Points.MakePointStructure[BigRats.BigRats, 2]; <> <> <> <<[]_ in.SkipWhitespace[];>> <> <> <> <<[]_ in.SkipWhitespace[];>> <> <> <> <<[]_ in.SkipWhitespace[];>> <> <> <> <<};>> <<>> <> <> <> <<};>> <<>> <> <> <> <> <<};>> <<>> <> <> <> <<};>> END.