PML is a multimedia file format used by the PowerMark software. It contains multimedia data, such as images and video clips, and is commonly used for creating presentations and digital portfolios. PML files can be opened and edited within the PowerMark software, making them ideal for multimedia projects.
OEB is an ebook format used by the Open eBook standard for digital publications. It supports rich text, images, and hyperlinks, and is commonly used for distributing digital books and content. OEB files are now considered obsolete, replaced by the more widely used EPUB format.