The term refers to a specific type of user interface element often found in applications that leverage the Immediate Mode GUI (IMGUI) framework on the iOS platform, particularly when dealing with rendering and display of data like Arbitrary Output Variables (AOVs). These menus facilitate the selection and manipulation of various rendering layers or data channels, allowing users to isolate and analyze specific aspects of a rendered image or scene.
Such functionality is crucial in professional graphics applications, game development tools, and visualization software. It allows developers and artists to examine individual components like diffuse lighting, specular highlights, or depth information, which aids in debugging, fine-tuning rendering parameters, and ultimately achieving desired visual results. The development of this type of interface on iOS enables portability and accessibility, granting users the ability to perform these analytical tasks on mobile devices.