2.1.3 Using the INFO Buttons
INFO buttons provide users with specific information pertinent to their adjacent form elements.
When you click an INFO button, specific helpful information will appear in the expanded frame at the bottom of your browser window. After reading the information, you may shrink this frame back to its normal size by clicking on the X on the right side of the frame.
This information should clarify the purpose of the related form element for you, but further helpful information can always be found by clicking on the Help tab at the top of the browser's main content frame.