B. Manifestation takes the form of a logo or sign at least 150mm high (repeated if on a glazed screen),or a decorative feature such as broken lines or continuous bands, at least 50mm high;. They are clearly defined with manifestation on the glass at two levels, 850 to 1000mm and 1400 to 1600mm above the floor, contrasting visually with the background seen through the glass (both from inside and outside) in all lighting conditions;.
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