Use this option to define openings in elements of a structure model.
Open the dialog using either of the following methods:
To define an opening specify the following:
H, B for a rectangular opening
D (diameter) for a circular opening
For a contour, you can select a contour/object by clicking to open the Polyline - Contour dialog.
Specify the coordinates of a point from which the values of the offset dx and dy are measured. The number of the active object in which the opening will be defined is displayed in the Object field.
Specify the local coordinates of a characteristic point of the opening with respect to the reference point. You can block the offset options dx and dy by selecting block dx and/or block dy.
If you define an opening outside of the object, a warning message is displayed.
To define an opening: