Draw indelible lines which are X horizontal/ Y vertical, highlight text to important point, draw long straight lines, and draw lines that are hard to write by using chalk.
Display various templates such as staff notation, manuscript paper and plotting paper on blackboard.
Switch displaying template easily from smartphone by using applications on smartphone.
Display images or video contents stored in PC folder on blackboard by dragging file to screen workspace intuitively.
Display pictures immediately on blackboard that has just taken by smartphone.
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