This website functions like any other:
When you see words or phrases that are underlined or are in a
different color, using your mouse or touchpad to run the arrow over those words
will change the arrow into a "hand", indicating that this is a live link which
when clicked on will take you someplace else.
If after reading the information where the link took you
you wish to return to the original page, you should
always be able to find a left arrow at the top of your browser window which will
take you back. Alternatively, hitting the "alt" and left arrow keys
simultaneously should also return you to the previous page.