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| Allegro CL

| 19 Filenames 19.2 Pathnames 19.2.2 Interpreting Pathname Component Values 19.2.2.4 Restrictions on Examining Pathname Components ### 19.2.2.4.6 Restrictions on Examining a Pathname Version Component The version can be any symbol or any integer. The symbol `:newest` refers to the largest version number that already exists in the file system when reading, overwriting, appending, superseding, or directory listing an existing file. The symbol `:newest` refers to the smallest version number greater than any existing version number when creating a new file. The symbols nil, `:unspecific`, and `:wild` have special meanings and restrictions; see Section 19.2.2.2 Special Pathname Component Values and Section 19.2.2.5 Restrictions on Constructing Pathnames. Other symbols and integers have implementation-defined meaning.

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