#### Editing Basic Hits by Probing:

You can also update Basic hits by probing the part in online mode, or clicking on the CAD in offline mode with the Measured Hits dialog box open. PC-DMIS will automatically update the dialog box with the new results.

For Basic hits, these check boxes appear:

Use Theoretical Vector As Approach Vector | This check box allows you to specify whether or not the theoretical vector should be used as the approach vector. If deselected, PC-DMIS calculates the approach vector by subtracting the theoretical hit point (X,Y,Z) from the current probe position.
Learn Hit During Execution | This check box allows you to specify whether or not PC-DMIS should relearn the basic hit during part program execution.