ANSI Common Lisp   19 Filenames   19.2 Pathnames

19.2.2 Interpreting Pathname Component Values

19.2.2.1  Strings in Component Values
19.2.2.2  Special Pathname Component Values
19.2.2.3  Restrictions on Wildcard Pathnames
19.2.2.4  Restrictions on Examining Pathname Components
19.2.2.5  Restrictions on Constructing Pathnames