When you ask a question on iPF, you will often receive an answer with screenshots or pictures, sometimes annotated with text or arrows.
There is no need to use a magnifying glass to see these screenshots. Simply touch the first picture and it will expand to full screen size. To view subsequent pictures, swipe from right to left. When you have finished looking at the screenshots, touch the screen to bring up your iPad controls, and touch the top, left corner of the screen to return to the thread.
If you are using Safari to view iPF, touching a picture will open it in a new tab.
Hope this is useful, particularly to those new to the iPad.
Sent from my iPad 4 HD mini