This paper describes a method for manipulating a threedimensional object without considering conventional three independent orthogonal views. We apply the direct manipulation to operate the three-dimensional object. We propose "augmented manipulation" which is an enhanced direct manipulation technique by using additional information. We implement three-dimensional modeling tool "Claymore" by using the "augmented manipulation" technique. Users can construct three-dimensional models in an intuitive manner. "Claymore" and the examples described in this paper are fully implemented and can be obtained via WWW. Keywords -- 3-D interface, virtual reality, design environment, visual programming, World Wide Web.