Double horizontal line, two parallel bars used for double-line box borders, fancy dividers and headers in DOS-style text art.
U+254FBOX DRAWINGS HEAVY DOUBLE DASH VERTICALU+2551BOX DRAWINGS DOUBLE VERTICALU+254EBOX DRAWINGS LIGHT DOUBLE DASH VERTICALU+2552BOX DRAWINGS DOWN SINGLE AND RIGHT DOUBLEU+254DBOX DRAWINGS HEAVY DOUBLE DASH HORIZONTALU+2553BOX DRAWINGS DOWN DOUBLE AND RIGHT SINGLEU+254CBOX DRAWINGS LIGHT DOUBLE DASH HORIZONTALU+2554BOX DRAWINGS DOUBLE DOWN AND RIGHTU+254BBOX DRAWINGS HEAVY VERTICAL AND HORIZONTALU+2555BOX DRAWINGS DOWN SINGLE AND LEFT DOUBLEU+254ABOX DRAWINGS LEFT LIGHT AND RIGHT VERTICAL HEAVYU+2556BOX DRAWINGS DOWN DOUBLE AND LEFT SINGLE128 characters in the Box Drawing Unicode block.
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AND RIGHTU+2518BOX DRAWINGS LIGHT UP AND LEFTU+2519BOX DRAWINGS UP LIGHT AND LEFT HEAVYU+251ABOX DRAWINGS UP HEAVY AND LEFT LIGHTU+251BBOX DRAWINGS HEAVY UP AND LEFTU+251CBOX DRAWINGS LIGHT VERTICAL AND RIGHTU+251DBOX DRAWINGS VERTICAL LIGHT AND RIGHT HEAVYU+251EBOX DRAWINGS UP HEAVY AND RIGHT DOWN LIGHTU+251FBOX DRAWINGS DOWN HEAVY AND RIGHT UP LIGHTU+2520BOX DRAWINGS VERTICAL HEAVY AND RIGHT LIGHTU+2521BOX DRAWINGS DOWN LIGHT AND RIGHT UP HEAVYU+2522BOX DRAWINGS UP LIGHT AND RIGHT DOWN HEAVYU+2523BOX DRAWINGS HEAVY VERTICAL AND RIGHTU+2524BOX DRAWINGS LIGHT VERTICAL AND LEFTU+2525BOX DRAWINGS VERTICAL LIGHT AND LEFT HEAVYU+2526BOX DRAWINGS UP HEAVY AND LEFT DOWN LIGHTU+2527BOX DRAWINGS DOWN HEAVY AND LEFT UP LIGHTU+2528BOX DRAWINGS VERTICAL HEAVY AND LEFT LIGHTU+2529BOX DRAWINGS DOWN LIGHT AND LEFT UP HEAVYU+252ABOX DRAWINGS UP LIGHT AND LEFT DOWN HEAVYU+252BBOX DRAWINGS HEAVY VERTICAL AND LEFTU+252CBOX DRAWINGS LIGHT DOWN AND HORIZONTALU+252DBOX DRAWINGS LEFT HEAVY AND RIGHT DOWN 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DRAWINGS VERTICAL HEAVY AND HORIZONTAL LIGHTU+2543BOX DRAWINGS LEFT UP HEAVY AND RIGHT DOWN LIGHTU+2544BOX DRAWINGS RIGHT UP HEAVY AND LEFT DOWN LIGHTU+2545BOX DRAWINGS LEFT DOWN HEAVY AND RIGHT UP LIGHTU+2546BOX DRAWINGS RIGHT DOWN HEAVY AND LEFT UP LIGHTU+2547BOX DRAWINGS DOWN LIGHT AND UP HORIZONTAL HEAVYU+2548BOX DRAWINGS UP LIGHT AND DOWN HORIZONTAL HEAVYU+2549BOX DRAWINGS RIGHT LIGHT AND LEFT VERTICAL HEAVYU+254ABOX DRAWINGS LEFT LIGHT AND RIGHT VERTICAL HEAVYU+254BBOX DRAWINGS HEAVY VERTICAL AND HORIZONTALU+254CBOX DRAWINGS LIGHT DOUBLE DASH HORIZONTALU+254DBOX DRAWINGS HEAVY DOUBLE DASH HORIZONTALU+254EBOX DRAWINGS LIGHT DOUBLE DASH VERTICALU+254FBOX DRAWINGS HEAVY DOUBLE DASH VERTICALU+2550BOX DRAWINGS DOUBLE HORIZONTALU+2551BOX DRAWINGS DOUBLE VERTICALU+2552BOX DRAWINGS DOWN SINGLE AND RIGHT DOUBLEU+2553BOX DRAWINGS DOWN DOUBLE AND RIGHT SINGLEU+2554BOX DRAWINGS DOUBLE DOWN AND RIGHTU+2555BOX DRAWINGS DOWN SINGLE AND LEFT DOUBLEU+2556BOX DRAWINGS DOWN DOUBLE AND LEFT 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