Glossary - V        A B C D E F G H I J K L M N O P Q R S T U V  W X

Variable - See Alias Parameter, Batch File Parameter, Function Parameter, and Environment Variable.

Variable Expansion - The process of scanning a command line and replacing each environment variable name, alias, function, and batch file parameter and function invocation with its value.

Variable Functions - Functions provided by TCC to manipulate strings, dates, and filenames; perform arithmetic; read and write files; and perform other similar functions. Variable functions are similar to environment variables or internal variables, but have parameters and can perform actions rather than just returning static information.

VFAT File System - An extension of the FAT file system which supports long filenames.

Virtual Disk - A portion of memory, dedicated for this use through special purpose software, accessible by programs as if it were a physical disk drive, and storing data in files in a directory tree. Also called a RAM Disk.

Volume - See Disk Drive.

Volume Label - A character string stored on a disk drive or volume used to identify it. Windows uses a special, hidden file name in the disk root directory for this purpose.