A window where you can create, edit, and connect rendering nodes, such as textures, materials, lights, rendering utilities, and special effects.
Hypershade displays each node as an icon (or swatch) representing the characteristics of the node. When you edit node attributes or assign textures or special effects, the swatch updates to visually reflect these changes.
To open the Hypershade window, use Window > Rendering Editors > Hypershade.
In other software packages, known as material editor, VOP editor (shading context), or surface editor.