A PPS - PowerPoint Slide Show is created with Microsoft PowerPoint software and provides numerous options for a professional presentation, offering great informational capacity and graphics abilities. These presentations are then saved as a completed PPS slide show ready to be viewed using either Microsoft PowerPoint or a PowerPoint viewer. The updated versions of Microsoft PowerPoint give users a vast array of choices in graphic designs, clip art, and text/font options. Beginning with PowerPoint 2007, the newer versions of PowerPoint cannot easily access the older PPT files. Also, newer versions of PowerPoint (from 2007) save files in OpenXML as its default format including a PPSX extension.