{HEAD ~ A skylight} that may have {TAIL ~ a domed type or flat type glazing} and which is adapted to fit within the opening of a roof or the like having a peripheral frame which is fixed to the roof about the opening 
{ HEAD ~ A skylight } that may have { TAIL ~ a domed type or flat type glazing } and which is adapted to fit within the opening of a roof or the like having a peripheral frame which is fixed to the roof about the opening
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