-，+ button for pencil Width Mouse Control with Pencil On/Off for Draw/Stop Change Pencil/Eraser to switch erase (part) or draw Press green flag again to erase (all) stuffs on the whiteboard Pencil Color: Dark Blue
Credits by Me Information of Orange blank number: Left one=pencil width Right one only 0 or 1，0=open mouse control and 1=stop mouse control
