What is 123-2?
What is potx?
The POTX file extension is used for the new and upcoming PowerPoint presenation formats by the Microsoft Corporation. Similar to POTM, it combines a XML architecture with a ZIP compression and remains and open format for anyone to use and can be opened by older version of Microsoft Office. Mime type: application/vnd.openxmlformats-officedocument.presentationml.template
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