Abstract: A GUI unit displays a model representing a three-dimensional form and a moving unit according to the information stored in a part information storage unit, and couples models of arbitrary moving units by a dragging operation using a mouse, etc., thereby specifying a moving unit and a subordinately moving unit. Furthermore, it displays the binding condition of each moving unit and the direction of the propagation of an interlock movement, and extracts and displays with high intensity a shape for determination of a geometric binding condition.

Abstract: It is checked whether or not an operation instruction input is inconsistent with editing rules. If the operation instruction is inconsistent, it is determined as an error. It is checked for an object operation instruction whether or not it violates a constraint condition. If the object operation instruction violates the constraint condition, it is determined as an error. Interference checking is made for an object operation instruction which does not violate the constraint condition. If interference occurs, an object is moved to avoid the interference. If the interference cannot be avoided, the object operation instruction is determined as an error. If a scene must be complemented due to a move of an object or an eye point, this scene is complemented. Some of complemented operation instructions are recursively checked, and only an operation instruction which does not become an error is stored in an operation instruction storing unit.

Abstract: A user authenticating section receives an access request from any one of a plurality of users and authenticates the user. An access controller selects a file format to which an access has been permitted from among a plurality of file formats, based on the access route of the user. An access executing section obtains registration information of a file format that has been selected by the access controller, from a registration information database, and transmits this registration information to the user.