[e.k.]

Mike,

thx for your fast response!
I use the work-around, it´s ok for me.

Now, I´m able 
- to sort by pages with option checked "use formatted title for sorting" / Numerically

and 
- sort by name with option unchecked "use formatted title for sorting" / A-Z


Maybe an additional Library Settings check box would be comfortable "un/display page-order",
in case of non/use of %page_order% . 

thx!