Pen is the most essential function in Whiteboard, and user to use stylus or fingers to write and draw on the screen.

• ：Switch between broad tip / fine tip menu
• ​：Tip style
  • ​：Regular
  • ​：Highlight
  • ​：Ink
  • ​：Eraser
• ​：Pen width adjustment
• ​：Pen color
• ​：Eyedropper
• ​：Palette