Ornament

In visionOS an ornament is a small panel that hangs off the edge of a window, floating slightly in front of it, holding controls that belong to that window. It travels with the window when the window is moved or resized, it is dismissed with it, and it is deliberately outside the frame rather than inside it, so the content area stays whole. A video player’s playback controls, a browser’s toolbar, a tab bar running down the leading edge: on that platform these are all ornaments.

The word needs care on this site, because it already appears here in an older sense. When the article on art deco talks about ornament it means decoration, the applied pattern that is not structure. The spatial sense is a specific component name from Apple’s guidelines and has nothing to do with decoration: an ornament in this sense is functional, and a decorative one would be exactly the wrong thing to hang beside a window. This entry is about the spatial meaning only, and the generic English word is not the term.

Two familiar components become ornaments by default when an app is built for the platform. A toolbar moves below the window’s bottom edge, and tabs become a vertical strip off the leading edge that widens to show its labels when the eyes reach it. That default is the interesting part of the design, because it says something about why the pattern exists. A window in a room is a fixed rectangle at a fixed distance, with no scrolling the viewer can do to escape a control that sits on top of the thing they are looking at. Moving the chrome outside the frame is cheap in a space that has no edges, and the content keeps every pixel it had.

Treat it as chrome, not as content. Keep it to a few controls, keep them large enough to be picked by look and pinch, and do not put anything in it that a reader has to read at length or anything destructive enough to want a confirmation, since a panel floating at the boundary of a window is easy to hit by accident and easy to lose track of. The web has no direct equivalent, which is worth knowing when the word comes up in a design review: a floating toolbar pinned outside a card is the nearest thing, but a page has no window edge of its own to hang from, and no depth to offset into.