- A word within a program or programming language that is reserved for special use that cannot be used. Reserved words are often found
in programming languages and macros.
- Reserved words are also used in operating systems as a method of identifying a device file or other service. For example, below is a
listing of Microsoft reserved words in MS-DOS and Microsoft Windows operating systems. When attempting to use any of the below reserved words as
a name of a file, or in a command you may encounter and unusual response. For example, attempting to save a file as CON or CON.txt may generate
a reserved file name error, may say the file already exists, or may cause an access denied error. Because these are reserved words you cannot create
a file using any of the below examples.
Also see: Device file, Java reserved words, Operating system definitions, Programming
definitions, Reserved character, Word