+.TP
+.B P
+Use the full path name when matching names in the archive.
+.B ar
+can not create an archive with a full path name (such archives are not
+POSIX complaint), but other archive creators can. This option will
+cause
+.B ar
+to match file names using a complete path name, which can be
+convenient when extracting a single file from an archive created by
+another tool.
+