Instructions
Obtain a dry-erase marker. As these markers are required for writing on a whiteboard, you may find one close to the whiteboard itself. If not, you will have to delay your writing until you can purchase or otherwise obtain one.
Remove the cap from the dry-erase marker.
Hold the marker in your hand the same way you would hold a normal pen or marker.
Touch the tip of the marker to the whiteboard.
Write your message on the whiteboard the same way you would write on paper.
Replace the cap on the marker once you are done.