1. Push Make Copy button to create image copy for mark up
  2. Select Circle tool for circle marks 
    1. Adjust circle size with mouse wheel
    2. zoom with Alt + mouse wheel
    3. Drag with central mouse button
    4. Use E key to create large ellipses, F for fast mode
  3. Select Arrow tool to add arrow marks. First click arrow point and then tail point
  4. Use Cursor tool to select and edit marks