Black board comes up! BlackBoard , you may have written using more than one finger . You can write very smoothly . ********************************************** Very simple feature ! ! I can and notes by hand quickly ! * Basic functions **************************** ▼ When you tap the button at the bottom of the screen , bar and color selection and save comes out . ▼ You can write using multiple fingers at the same time . ▼ simple , color five black , red , blue , green , pink . ▼ to slide , adjustable thickness of the line . ▼ Press the " eraser " button , you can turn off the line you wrote . ( Adjustable thickness to turn off the slide ) ▼ Press the " Trash " button , you can bulk delete . ▼ Press the "disk" button , you can save the image . ※ If you can not save image ... Please turn on the "Settings" / Privacy / photo / " BlackBoard " .