We mentioned earlier that docx files (like xlsx and pptx) are part of the OOXML standard. The document defining this standard[6], describes the syntax and values that can be used as an example. An interesting file to look at is the ‘settings.xml’ file that can be discovered in the ‘Word’ container of the docx zip file. This file contains settings with regards to language, markup and more. First, we extracted all the data from the settings.xml files and started to compare. All the documents below contained the same language values