Pathname identifying location of buffer.
An external format spec.
A buffer whose contents are examined.
Length (an integer) up to which buffer should be examined.
Merge ef-spec with (:default :eol-style :crlf)
on Microsoft Windows, (:default :eol-style :lf)
on UNIX/Linux/Mac OS X. This is usually used as the last function on its list.
LispWorks User Guide and Reference Manual - 13 Feb 2015