button down, drag down to highlight your choice; release the mouse). See Typing Reminders for definitions of the Bookmark, Reload, Forward, Back, Stop, and History buttons.

Error Messages

Many programs will alert you with a sound effect if you're trying to perform something that won't work. Others will give an error message. You can usually click on help (or type h or ?) to learn what to do.

Exiting

As you enter a program, often there will be a line at the beginning telling you how to exit or quit. Note that command (frequently Alt + F4). If you forget, you can usually type Q or mouse-click in the top-right or top-left corner where you'll see an X or square. Don't just turn off your computer-- particularly if you're connected to a text-based host computer program. It can leave that computer line busy for others.