?

Positioning of characters?

The attached source tries three renderings for ‘Ax’. My
understanding of the positioning mechanism is that, in all three cases,
the reference point for ‘x’ should be 0.7ex under the right leg of A.
Moreover, the measurement 0.7ex should be with respect to the
dimension of the font of A.

 /\
 /--\
 / \...........
 \/ } 0.7ex within font of A
 ./\.......}

Is that understanding correct?

NN 4.04 provides the desired outcome in the first case, but not in the
second and third cases. IE 4.0, on the other hand, produces the
desired outcome for the second and the third cases, but not the first.

-eitan

<HTML><HEAD> <TITLE>aa.html</TITLE> </HEAD><BODY>
 Ax

 Ax

 Ax

 y
</BODY></HTML>