What I noticed was that most of the attention was between the left side and center of the page. The only attention point on the right side was the scroll bar. Made me think of the NEXTSTEP window manager where the scroll bars were on the left. The explanation at the time for this apparent deviation from the "standard" was that it kept the scroll bar closer to the user's primary attention areas on the page.

In Mac OS X i guess Apple caved to popular convention and moved the scroll bars to the right.