 and C++ and
access C data from many Common Lisp implementations.

   <p><a name="index-foreign-functions-and-data-2"></a>The concept can be generalized to other languages; at the time of
writing, only <acronym>CFFI</acronym>'s C support is fairly complete, but C++
support is being worked on.  Therefore, we will interchangeably refer
to <dfn>foreign functions</dfn> and <dfn>foreign data</dfn>, and &ldquo;C functions&rdquo;
and &ldquo;C data&rdquo;.  At no time will the word &ldquo;foreign&rdquo; carry its u