Specifies a High-Definition resolution of 1920x1080 pixels.
You can view these text files using standard editors like Notepad or specialized readers like NFOPad . Bonn.S01.1080p.Ultradox
The naming convention follows standard file-sharing patterns typically found on Usenet or torrent trackers: The title of the series. S01: Indicates Season 1. Specifies a High-Definition resolution of 1920x1080 pixels