[css-writing-modes-3] Why baseline-align-super.gif in section 5

Hello,

Example 8 in section 4.4

http://www.w3.org/TR/css-writing-modes-3/#baseline-alignment

uses the image

http://www.w3.org/TR/css-writing-modes-3/baseline-align-super.gif

which is okay.

And then section 5

http://www.w3.org/TR/css-writing-modes-3/#intro-text-layout

re-uses such image but I fail to see why. I think such image is not 
needed, not relevant; its presence in §5 seems like an error.

Gérard