-Create intermediate directories as required. If this option is not
-specified, the full path prefix of each operand must already exist.
+Create intermediate directories as required.
+If this option is not specified, the full path prefix of each
+operand must already exist.
+Intermediate directories are created with permission bits of
+.Li rwxrwxrwx (\&0777)
+as modified by the current umask, plus write and search
+permission for the owner.