With the pen tool, you can add freehand drawings to the board. Click the Pen tool or press P on the keyboard, select size and color, and start drawing by holding down the mouse button and dragging the cursor.
Drawing with the pen
To delete a drawing, switch to the Eraser and swipe across the drawings while holding down the mouse button. You can also select drawings with the Cursor, and erase them using the Delete key on your keyboard.
Using the eraser tool