The extension PPAM denotes a macro-enabled add-in for the presentation software Microsoft PowerPoint as of version 2007 (Mac 2008). The PPAM files include VBA (Visual Basic for Applications) and may also contain macros.
AddIns extend PowerPoint with additional features, such as new features or the ability to run macros. The addins can be created by the user or come from other developers.
The files are based on the Office Open XML standard. This is an XML based file format that is unreadable with earlier PowerPoint versions. For Office versions 2000, 2003, and XP, this feature can be rebuilt using the Microsoft Office Compatibility Pack.
For PPAM files from unknown sources, a check by anti-virus software is indicated.