When the boreholes are locked, all graphical editing is disabled and a check appears on the menu. This prevents the boreholes, the borehole contacts, and the borehole segments from being inadvertently dragged with the mouse. Also, the Edit Window becomes disabled. The boreholes can still be edited using the Borehole Editor. The boreholes can be unlocked by selecting the Lock All Boreholes command again, and the check in the menu will disappear.
Related Links:
Creating and Editing Boreholes