Hello - The description is referring to the fact that the monitor shows accurate color and lighting when viewed from other angles than straight ahead - Most older/TN displays show about a 45-50 degree angle cone of accurate color (approximately 20-25 degrees above, below, and to the left or right of facing the screen at-center. These newer IPS panels can show almost 180 degrees of accurate color and lighting from any viewing angle - Think about your TV: When you sit directly ahead of it and when you sit to one side or the other of it, the picture looks largely the same - Those are IPS panels - The older TN panels are cheaper (usually) and are features on budget laptops and budget monitors - But IPS is taking hold as the standard for its superior angle viewability...
This doesn't mean the monitor supports any other mounted angles, just that its angles to be viewed at are greatly improved over cheaper monitors, and most in its price range.