Found in the Preferences menu under "Object Presentation..." or by pressing NVDA+Control+O, this dialog box contains the following options:
A check box that when checked tells NVDA to announce tool tips as they appear. Many Windows and controls show a small message (or tool tip) when you move the mouse pointer over them, or sometimes when you move the focus to them.
This check box when checked tells NVDA to announce help balloons as they appear. Help Balloons are like tool tips, but are usually larger in size, and are associated with system events such as a network cable being unplugged, or perhaps to alert you about Windows security issues.
When this check box is checked, NVDA will include the shortcut key that is associated with a certain object or control when it is announced. For example the File menu on a menu bar may have a shortcut key of alt+f.
Uncheck this checkbox if you feel you don't need to hear the description announced along with objects.
A progress bar is a control which looks a bit like a ruler. As a task is slowly being completed, more of the bar gets highlighted. It also shows a percentage value, to numerically tell you how far along it is. Progress bars are shown for things like loading a web page, checking your email, or processing a sound file etc. If this check box is checked, NVDA will use beeps to let you know how far along a progress bar is as it moves. This is sometimes a lot nicer than hearing lots of numbers.
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