#### Understanding the CAD Select Dialog Box

This dialog box appears after you box select on a CAD model while the Auto Features dialog box remains open. It displays the number of selected CAD elements that can be used to generate features of the selected type.

Create: This button creates auto features of the selected type (currently only Circle or Cylinder auto features) from the selected CAD elements. PC-DMIS will close the CAD Select dialog box, and from each box selected element, PC-DMIS will generate the appropriate feature. The vector will be determined using the method selected from the Vector Use area.

Close: Closes this dialog box, canceling the box selecting operation.

Display arrows: This check box displays or hides colored arrows showing the direction of vectors used by the methods in the Vector Use area.

The Vector use area lets you choose the methods PC-DMIS should use to determine the vectors for the nearly created auto features.

- Workplane: This method uses the vector of the currently active work plane as the vector for each individual feature.

- Last used: This method uses the last vector that was placed in the dialog box for the Auto Feature. This lets you specify one vector to be used for all the selected features.

- From CAD: This method uses the vector that is specified by the CAD feature. This method becomes available if vector data is available for each feature.

- Find vector: This method finds the vector using the CAD surface data that is closest to the feature. This method is only available if surface data is available.

- Flip using probe vector: During the CAD import process, some types of CAD (usually IGES) may have some surface normal vectors that incorrectly point into the part instead of out of the part. This method flips the selected features' vectors so that they point out of the surface, using the probe vector to help indicate the correct vector direction. That option becomes available when you box select feature types that may have surfaces with incorrect normal vectors.