Favorite iOS Feature

I have a ton of favorites, actually, but the one that I am most intrigued about is the zoom-text feature as shown here:

Notepad App - Text Zoom

When I first encountered it it took me a second to work it as it is so revolutionary, as are most iOS features. I find it very simple to use now, and very intuitive. After removing your finger you can copy, delete, insert, select all, or even define the selected word – pretty nifty!