Hi,
Half window view is like adding "virtual space" in text windows to push the last line to the middle of the windows. It behaviors as if you have added a couple of returns at the end of the document. I hate to see all the lines in the viewing area pushed up everytime I hit return or softwrap to the next line. With half window views, the lines only get pushed up every half window instead of every line.
I use this feature a lot in vim and TextWrangler. In vim, it can have any number of virtual space (denoted by tildes), which I think it's better implentation than TextWrangler, which allow you to choose "none", "half", or "full" only. However, I will be happy with just one option, half window view.
Anyway, I just want to bounce the idea to other users.
Ivan