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PPSX File - What is a .ppsx file and how do I open it? - FileInfo.com
What Is a PPSX File? - Lifewire
Start a presentation automatically with a PowerPoint Show
How to Change a PowerPoint Show (PPSX) to a Work File (PPTX) - How-To Geek
PPSX File: How to open PPSX file (and what it is)
What Is a PPSX File? - UMA Technology
What is a PPSX file in PowerPoint? - Learn PowerPoint
PPSX File Extension - What is it? How to open a PPSX file?
What is a PPSX File? (File Extension Explained) - FPPT.com
What Is a PPSX File? - The Tech Edvocate