It's collapsable, implying you don't have to collapse it if you don't want. The eye strain thing was referring to the maximum line width feature. Studies have

It's collapsable, implying you don't have to collapse it if you don't want. The eye strain thing was referring to the maximum line width feature. Studies have shown that longer-width lines are harder to read than shorter-width lines. But sure, you could just imagine that they're doing these changes because they need to justify their jobs.