architecture background broken curve curved curves decay dirty element elements old roof sinusoidal texture uralite urban electronic equipment icon measuring metering monitor O-scope oscilloscope pictogram scope screen sign sine wave sinusoid symbol test angles appearance blank color colored coloring colors colour coloured colouring colours cutout down-lights equal-area light lighting lit location locations map map-projection mapping overlay pseudocylindrical raised rough shadow shadows shiny sinusoidal-Mollweide-projections-hybrid wall wood wooden World world-map partial-world-map
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