style:writing-mode attribute appears on <style:page-layout-properties>, includes "page" value (not meaningful for a page)

style:writing-mode attribute appears on <style:page-layout-properties>, includes "page" value.

page means "writing mode is inherited from the page that contains the element where this attribute appears."

But <style:page-layout-properties> is the element where "page" would be inherited from. So "page" not meaningful for this attribute on <style:page-layout-properties>

Question: To remove this requires declaration of another attribute group. Should we insert a note saying to ignore this value for the attribute on this element? As opposed to complicating the schema?