How do you define file formats which are "proprietary"? For example, Libre Office can save files in .doc format which is weird because I know MS like taking organisations to court over stuff like this ...

Windows associates data files with applications so that the appropriate program launches automatically when the icon or name of the data file is clicked. For example, if a GIF image is associated with ...

A file that contains data made up of ASCII characters. It is essentially raw text just like the words you are reading now. Each byte in the file contains one character that conforms to the standard ...