A POTM file is a macro-enabled presentation template created by Microsoft PowerPoint, a program used for creating slide show presentations. It contains default images, slide templates, macros, and formatting. POTM files are used to create multiple .PPTM files with the same formatting and macro settings.
is an e-book format developed for the Psion Series 3 platform used in the 1990s. It contains text and its formatting parameters. This e-book format was used exclusively in Psion devices.