Target namespace: http://schemas.microsoft.com/office/word/2012/wordml

The footnoteColumns global element<21> is a CT_DecimalNumber (as specified by [ISO/IEC29500-1:2016] section A.1) element that, when added to a document section (sectPR element, as specified in [ISO/IEC29500-1:2016] section 17.6.18), specifies the formatting of the footnotes area of the page containing that section. If the element exists and is non-zero, then the footnotes area is formatted with the number of columns specified. If the element does not exist, or is zero, then the footnotes area of the page is formatted with a number of columns based on the number of columns on the displayed page.

The following W3C XML Schema ([XMLSCHEMA1] section 2.1) fragment specifies the contents of this element.

 <xsd:element name="footnoteColumns" type="w12:CT_DecimalNumber"/>

See section 5.2 for the full W3C XML Schema ([XMLSCHEMA1] section 2.1).