Hi,
The CFFI user manual seems to be incorrect for DEFINE-PARSE-METHOD -- http://common-lisp.net/project/cffi/manual/cffi-manual.html#define_002dparse...
The examples are the same as for DEFINE-FOREIGN-TYPE (which is the previous symbol described in the manual), and the description is missing. Also, the descriptions given for Arguments and Values are either incorrect, or they are not very clear..
Chaitanya