JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. References Key-ins For most of the references operations, there is a key-in alternative that you can use when required. Typically, you can use the key-ins to: Attach/detach references. Modify references' attributes. Merge references. References Key-in Format Reference Settings Key-ins Visible Edges Display Key-ins Miscellaneous References Key-ins Reinstating Level Display On and Off Settings After Switching References Outside the Product Parent topic: Working with Attached References