Ключевые слова: backdrop, background, base, basic, black, blank, board, brainstorm, briefieng, business, class, cleansers, creativity, design, draw, drawing, dry, educate, education, empty, foundation, frame, hands, idea, isolated, lectures, lesson, magnet, magnetic, marker, meeting, note, noticeboard, old, pencil, presentation, school, scratch, sketching, space, substrate, teach, template, texture, unfinished, used, wall, white, whiteboard, write,