True, these are very open standards. Microsoft even provides a pretty good xml editing tool to inspect a docx of xlsx or whatever once it is made to see how it

True, these are very open standards. Microsoft even provides a pretty good xml editing tool to inspect a docx of xlsx or whatever once it is made to see how it is made https://msdn.microsoft.com/en-us/library/office/bb448854(v=office.15).aspx https://msdn.microsoft.com/en-us/library/office/bb448854(v=o...