The functions in this section do not actually access files, so they can operate on file names that do not refer to an existing file or directory. On VMS, all these functions understand both VMS file-name syntax and Unix syntax. This is so that all the standard Lisp libraries can specify file names in Unix syntax and work properly on VMS without change. The directory part of a file name, and the rest. A directory's name as a directory is different from its name as a file.
Some file names are relative to a current directory.
File Name Expansion Converting relative file names to absolute ones. Unique File Names Generating names for temporary files. File Name Completion Finding the completions for a given file name.