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I am asking if there are braille symbols to show open or closed circles at the ends of a tactile line drawn on APH low-relief graph paper. Do I use the braille symbols used on a number line (X for open and full cell for closed)? The line is drawn with a spur wheel and the end points are either puff paint or hi-dots and I would braille the open or closed symbol next to the marked end point. These are disposable worksheets for an Algebra 1 student.