Enter the last letter in the first sentence: Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do?

Perhaps this will hold the answer - http://en.wikipedia.org/wiki/Lorem_ipsum

"Lorem ipsum" is largely meaningless filler text.

But I'd take "the first sentence" of that sample to end at the first full stop: "... et dolore magna aliqua."

So enter "a".

All it's, is an area holder for text that you're going to change on the template. It suggests the final appear of a template with text without having distracting phrases. I suppose some latin man started it (lol)