5.24 http://schemas.microsoft.com/office/spreadsheetml/2018/08/main Schema

 <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://schemas.microsoft.com/office/spreadsheetml/2018/08/main" targetNamespace="http://schemas.microsoft.com/office/spreadsheetml/2018/08/main" elementFormDefault="qualified">
   <xsd:attribute name="misleadingFormat" type="xsd:boolean"/>
 </xsd:schema>