High Detail toggles the mode of the Front and Rear views in the Rack Layout environment. When High Detail is checked you will see accurate graphical representations of the products in your rack, including all front or rear details such as controls and connectors. When High Detail is not checked, products are represented as outlines with text showing the Manufacturer and Model Number.
Low detail can be useful for build-as drawings which need to indicate only where in the rack a product should be positioned. High detail is useful for sales presentations and other occasions where you want to show your rack in all its glory.