Patent ID: 8140988
Filing Date: 2012-03-20
Classification: G06F

Abstract:
1. A CAD apparatus configured to display and edit graphic data including a plurality of layers, the CAD apparatus comprising: a display unit having a display screen and configured to display elements included in each of the layers of the graphic data in a superposed manner on the display screen; an input unit that at least receives an instruction about movement of a pointer indicating a position on the display screen; an association-information storage unit that stores information about an association between the elements included in the layers of the graphic data; and an editing unit that specifies each of the elements included in the layers of the graphic data and associates the elements included in the layers of the graphic data to each other in the superposed manner on the display screen by input from the input unit, the editing unit creating an association list that is stored in the association-information storage unit with associated restrictions on the elements being edited in a synchronized manner.