I'm confused by your comment. "Segment tuning" isn't a feature, it's a process. One only did it for performance gains. That one would have to do it for performa

I'm confused by your comment. "Segment tuning" isn't a feature, it's a process. One only did it for performance gains. That one would have to do it for performance gains is a result of the fact that code segments were loaded in 64 KB chunks. It's another instance of trying to take advantage of spatial locality to achieve better performance.