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Bed sheets come in two main varieties: flat and fitted. A flat sheet is simply a rectangular sheet of cloth, while a fitted sheet has four corners, and sometimes two or four sides, fitted with elastic, to be used only as a bottom sheet. The fitted sheet may also be secured using a drawstring instead of elastic. The purpose of a fitted bottom sheet is to keep it from slipping off the mattress while the bed is in use. A particular way of folding and tucking while making the bed, known as hospital corners, is sometimes used when the bottom sheet is flat rather than fitted.

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One of the key benefits of fitted sheets for electric adjustable beds is their elasticized corners, which ensure a snug and secure fit on the mattress. This not only prevents the sheet from slipping or coming loose during the night but also helps to maintain a smooth and wrinkle-free surface for sleeping. This is particularly important for adjustable beds, as the movement of the mattress can cause traditional sheets to become dislodged and uncomfortable.

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In conclusion, the dark sheet is a multifaceted metaphor, a rich tapestry woven with threads of mystery, transformation, and wonder. It's a reminder of our finite knowledge, an invitation to explore, and a celebration of the beauty found in the unknown. Whether in science, art, or life itself, the dark sheet continues to inspire, provoke, and challenge us, urging us to look beyond the boundaries of what we know and venture into the realms of the uncharted.

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