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1.選取畫筆功能後，是否有辦法將 選色/粗細/濃淡的 面板保持常駐在白板上，以便可隨時快速調整而無須再次點選畫筆功能？
2.百寶箱裡的直角座標平面，想許願新增 可調整單位長的距離大小，或者 可將座標平面做等比例的放大。