Thin diagonal line rising from lower left to upper right, a forward slash shape used in box drawing and text-mode ASCII art borders.
U+2570BOX DRAWINGS LIGHT ARC UP AND RIGHTU+2572BOX DRAWINGS LIGHT DIAGONAL UPPER LEFT TO LOWER RIGHTU+256FBOX DRAWINGS LIGHT ARC UP AND LEFTU+2573BOX DRAWINGS LIGHT DIAGONAL CROSSU+256EBOX DRAWINGS LIGHT ARC DOWN AND LEFTU+2574BOX DRAWINGS LIGHT LEFTU+256DBOX DRAWINGS LIGHT ARC DOWN AND RIGHTU+2575BOX DRAWINGS LIGHT UPU+256CBOX DRAWINGS DOUBLE VERTICAL AND HORIZONTALU+2576BOX DRAWINGS LIGHT RIGHTU+256BBOX DRAWINGS VERTICAL DOUBLE AND HORIZONTAL SINGLEU+2577BOX DRAWINGS LIGHT DOWN128 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 LIGHTU+252EBOX DRAWINGS RIGHT HEAVY AND LEFT DOWN LIGHTU+252FBOX DRAWINGS DOWN LIGHT AND HORIZONTAL HEAVYU+2530BOX DRAWINGS DOWN HEAVY AND HORIZONTAL LIGHTU+2531BOX DRAWINGS RIGHT LIGHT AND LEFT DOWN HEAVYU+2532BOX DRAWINGS LEFT LIGHT AND RIGHT DOWN HEAVYU+2533BOX DRAWINGS HEAVY DOWN AND HORIZONTALU+2534BOX DRAWINGS LIGHT UP AND HORIZONTALU+2535BOX DRAWINGS LEFT HEAVY AND RIGHT UP LIGHTU+2536BOX DRAWINGS RIGHT HEAVY AND LEFT UP LIGHTU+2537BOX DRAWINGS UP LIGHT AND HORIZONTAL HEAVYU+2538BOX DRAWINGS UP HEAVY AND HORIZONTAL LIGHTU+2539BOX DRAWINGS RIGHT LIGHT AND LEFT UP HEAVYU+253ABOX DRAWINGS LEFT LIGHT AND RIGHT UP HEAVYU+253BBOX DRAWINGS HEAVY UP AND HORIZONTALU+253CBOX DRAWINGS LIGHT VERTICAL AND HORIZONTALU+253DBOX DRAWINGS LEFT HEAVY AND RIGHT VERTICAL LIGHTU+253EBOX DRAWINGS RIGHT HEAVY AND LEFT VERTICAL LIGHTU+253FBOX DRAWINGS VERTICAL LIGHT AND HORIZONTAL HEAVYU+2540BOX DRAWINGS UP HEAVY AND DOWN HORIZONTAL LIGHTU+2541BOX DRAWINGS DOWN HEAVY AND UP HORIZONTAL LIGHTU+2542BOX 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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DRAWINGS DOUBLE VERTICAL AND HORIZONTALU+256DBOX DRAWINGS LIGHT ARC DOWN AND RIGHTU+256EBOX DRAWINGS LIGHT ARC DOWN AND LEFTU+256FBOX DRAWINGS LIGHT ARC UP AND LEFTU+2570BOX DRAWINGS LIGHT ARC UP AND RIGHTU+2571BOX DRAWINGS LIGHT DIAGONAL UPPER RIGHT TO LOWER LEFTU+2572BOX DRAWINGS LIGHT DIAGONAL UPPER LEFT TO LOWER RIGHTU+2573BOX DRAWINGS LIGHT DIAGONAL CROSSU+2574BOX DRAWINGS LIGHT LEFTU+2575BOX DRAWINGS LIGHT UPU+2576BOX DRAWINGS LIGHT RIGHTU+2577BOX DRAWINGS LIGHT DOWNU+2578BOX DRAWINGS HEAVY LEFTU+2579BOX DRAWINGS HEAVY UPU+257ABOX DRAWINGS HEAVY RIGHTU+257BBOX DRAWINGS HEAVY DOWNU+257CBOX DRAWINGS LIGHT LEFT AND HEAVY RIGHTU+257DBOX DRAWINGS LIGHT UP AND HEAVY DOWNU+257EBOX DRAWINGS HEAVY LEFT AND LIGHT RIGHTU+257FBOX DRAWINGS HEAVY UP AND LIGHT DOWN