These are files that are set up by a Program because it needs to use them when it runs. For example a spreadsheet program might want to keep a record of the last change that was made by the user to allow the change to be "undone" if required. The program may decide to keep the copy of the changes in a Temporary File. All good programs will delete Temporary Files when they are no longer required.
TEMPORARY FILES
Meaning of TEMPORARY FILES in English
English glossary of Internet and PC terminology. Английский глоссарий Интернет и ПК терминологии. 2012