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A PPSM file is a PowerPoint Slide Show Macro-Enabled file used to present slideshows with embedded macros. These files allow users to automate tasks within presentations, making them more interactive and dynamic. Interestingly, the macro functionality in PowerPoint is based on VBA (Visual Basic for Applications), a scripting language integrated since the mid-1990s. This format is especially useful for users needing custom automation during their presentations.
Technically, a PPSM file is a variant of PowerPoint's PPTX format, using the Open XML standard but with macro content enabled. It stores slide data, multimedia, and VBA scripts within a compressed ZIP archive structure. The macros are written in VBA and can manipulate slide elements, automate repetitive tasks, or trigger actions during presentations. This format became prominent starting with Microsoft Office 2007, reflecting a shift toward more secure and versatile document handling.
PPSM files open directly in slideshow mode, providing a seamless viewing experience without switching into the editing interface. Because they contain macros, these files can pose security risks if sourced from untrusted creators, so many systems prompt users before enabling macros. Historically, Microsoft introduced macro-enabled files to enhance productivity but also faced challenges due to macro viruses. Users should always ensure their antivirus software is up to date before opening PPSM files.
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