133 Microsoft PowerPoint Presentation 4.x Presentation Microsoft PowerPoint Presentation is a proprietary binary file format developed by Microsoft Corporation used to store presentation files created in the Microsoft PowerPoint presentation software. This record describes version 4 of .ppt file format released in February 1994 for Windows, and included in the 4.2 version of Microsoft Office for Windows released in the same year. Versions up to version 4 of Microsoft PowerPoint use .ppt as extension however, they are not compatible with each other. Microsoft made backwards compatibility an optional add-on after Office 2003 and appears to have removed it altogether in Office 2010. Please follow the links attached to this entry for more information. Text 1 Digital Preservation Department / The National Archives 02 Aug 2005 24 Aug 2022 application/vnd.ms-powerpoint MIME com.microsoft.powerpoint.ppt Apple Uniform Type Identifier x-fmt/88 PUID ppt File extension 181 PowerPoint 4.0 Compound document header + PowerPoint Document user stream + version number (pp40) 1 Absolute from BOF 0 D0CF11E0A1B11AE1{20}FEFF 1 Variable 5000500034003000 1 Variable 4D6963726F736F667420506F776572506F696E74 Has priority over 135 Microsoft Powerpoint Presentation Has priority over 767 OLE2 Compound Document Format Is previous version of 134 Microsoft Powerpoint Presentation Is subsequent version of 2594 Microsoft PowerPoint Presentation