Here is a wonderful feature that HTC Sense has. When you selecting text you will use your finger to point to the text. You will realize that your finger will be hiding the text from your view. In order to look carefully what are you pointing, you will move your head forward to have a peek.
(try it at any of your android phone and you will understand more)
With HTC Sense, it makes it easier for you to see as it will enlarge the area that you are pointing.
This makes sense.