Tried exporting a design to .svg for use in Inkscape and this is what the file looked like when it opened
Here are contents of the grid file
{ "settings": { "size": { "width": 1830, "height": 960 } }, "layers": [ [ { "type": "arc_c", "vertices": [ { "x": 840, "y": 735 }, { "x": 795, "y": 690 } ] }, { "type": "line", "vertices": [ { "x": 795, "y": 690 }, { "x": 825, "y": 660 }, { "x": 825, "y": 660 }, { "x": 840, "y": 645 }, { "x": 840, "y": 645 }, { "x": 795, "y": 630 }, { "x": 795, "y": 630 }, { "x": 585, "y": 615 }, { "x": 585, "y": 615 }, { "x": 570, "y": 585 } ] }, { "type": "arc_c", "vertices": [ { "x": 915, "y": 690 }, { "x": 840, "y": 645 } ] }, { "type": "line", "vertices": [ { "x": 855, "y": 615 }, { "x": 840, "y": 645 } ] }, { "type": "line", "vertices": [ { "x": 840, "y": 735 }, { "x": 885, "y": 690 } ] }, { "type": "line", "vertices": [ { "x": 855, "y": 615 }, { "x": 810, "y": 600 }, { "x": 810, "y": 600 }, { "x": 570, "y": 585 } ] }, { "type": "line", "vertices": [ { "x": 915, "y": 690 }, { "x": 915, "y": 645 } ] }, { "type": "line", "vertices": [ { "x": 855, "y": 615 }, { "x": 915, "y": 645 } ] }, { "type": "line", "vertices": [ { "x": 885, "y": 570 }, { "x": 885, "y": 570 } ] }, { "type": "line", "vertices": [ { "x": 870, "y": 615 }, { "x": 885, "y": 570 } ] }, { "type": "arc_c", "vertices": [ { "x": 885, "y": 570 }, { "x": 915, "y": 555 } ] }, { "type": "arc_c", "vertices": [ { "x": 855, "y": 600 }, { "x": 825, "y": 570 }, { "x": 855, "y": 540 }, { "x": 885, "y": 570 } ] }, { "type": "arc_c", "vertices": [ { "x": 885, "y": 630 }, { "x": 915, "y": 615 }, { "x": 930, "y": 615 }, { "x": 960, "y": 630 } ] } ], [], [] ], "styles": [ { "thickness": 10, "strokeLinecap": "round", "strokeLinejoin": "round", "color": "#fff", "fill": "none", "mirror_style": 1 }, { "thickness": 10, "strokeLinecap": "round", "strokeLinejoin": "round", "color": "#ccc", "fill": "none", "mirror_style": 0 }, { "thickness": 10, "strokeLinecap": "round", "strokeLinejoin": "round", "color": "#999", "fill": "none", "mirror_style": 0 } ] }