Locate information, marking information, and/or landmark information relating to a locate operation and/or a marking operation to detect and/or mark a presence or an absence of at least one underground facility is categorized into a plurality of display layers for electronic rendering. At least some of the display layers may be independently enabled or disabled for display such that only enabled display layers are displayed in a display field of a display device. Alternate enabling and disabling of one or more display layers facilitates comparative viewing of the layers. A layer directory or layer legend pane may be displayed to allow for selective enabling/disabling of one or more layers. One or more layers further may be categorized into sub-layers, and respective sub-layers of a given layer similarly may be independently enabled or disabled for display.