Definition(en): Persuasion Player File is part of Aldus Persuasion format family. This format was a read-only version of the program that was available for free to play back slideshows created in the full version of Persuasion. Adulus Persuasion is now discontinued presentation program software first developed by Peter Polash in 1988 for the Macintosh. Following a merger of Adobe Systems and Adulus Corporation in 1994, the software was re-branded to Adobe Persuasion and a Microsoft Windows version was released. There were two versions released for Macintosh only, then starting with version 2.x, a version for Windows was released with each new release up to version 4. Version 4 was released in 1996 and was bundled with other Adobe applications. Adobe discontinued production of the software in September 1997.