The button’s texture was smooth, cool, and final. Like a polished river stone.

Weird. But not a crisis. He had spreadsheets to drown in.

A refers to the visual "skin" or material effect applied to the background of an operating system's taskbar . While default settings in Windows and macOS typically offer only solid colors or standard transparency, "texturing" allows for advanced aesthetics like glass, brushed metal, or acrylic gradients. The Evolution of Taskbar Aesthetics

"Don't click it," Miles whispered.

By noon, Miles had discovered the rules.

Or he could click on the Start menu, just to see what it felt like now.