lispdoc - results for ensure-directories-exist

(ensure-directories-exist pathspec &key verbose (mode 511))
Function: Test whether the directories containing the specified file actually exist, and attempt to create them if they do not. The MODE argument is a CMUCL/SBCL-specific extension to control the Unix permission bits.
 Mentioned in:
HyperSpec - Function ENSURE-DIRECTORIES-EXIST
PCL - interacting with the file system