{HEAD ~ An arcuate slot} of at least 180° in the lid top permits {TAIL ~ squeezing pressure} to be applied to the lid skirt at two diametrically opposed points to effect displacement of a portion of the lid providing access to the bottom of the lid for swinging the lid open 
permits
{ HEAD ~ An arcuate slot } of at least 180 ° in the lid top permits { TAIL ~ squeezing pressure } to be applied to the lid skirt at two diametrically opposed points to effect displacement of a portion of the lid providing access to the bottom of the lid for swinging the lid open
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