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 ...

A file is the common storage unit in a computer, and all programs and data are "written" into a file and "read" from a file. A folder holds one or more files, and a folder can be empty until it is ...

(1) A file that is capable of holding two or more multimedia elements (text, images, audio, video and animations). See multimedia, multimedia container and metafile. (2) Any file other than one ...