"I do love secondhand books that open to the page some previous owner read oftenest. The day Hazlitt came, he opened to 'I hate to read new books,' and I hollered 'Comrade!' to whoever owned it before me."
The target attribute specifies where to open the linked document.
I know. That's why this use doesn't seem to make sense to me. Maybe it's useful if you have a ton of such links and they'll all open into the same window as the first? In any case, it can safely be left out. Links open fine without a target attribute.