--- root: items: - type: stacking-context bounds: [0, 0, 300, 300] "scroll-policy": scrollable z-index: 4 transform: [1, 0, 0, 0, 0, 0, 1, 0, 0, -1, 0, 0, 0, 150, -150, 1] items: - type: clip # This image mask here assures that we will be forced to try to # mask instead of skipping it due to the mask rect becoming a # zero rect. image-mask: image: "tiny-check-mask.png" rect: [0, 0, 300, 300] repeat: false id: 2 - type: rect clip-chain: [2] bounds: [0, 0, 300, 300] color: 0 128 0 1.0000 - type: rect bounds: [0, 0, 100, 100] color: 0 255 0 1.0