Default value:

(and (>= *delivery-level* 3) 
     (not (member (delivery-value :keep-clos)

If this is non- nil , generic functions with single methods and simple arguments are collapsed -- that is, replaced by ordinary functions.

Note: Methods cannot be added to collapsed generic functions, since after their collapse to ordinary functions the generic functions definitions are deleted.

A formatted report detailing the actions performed during the collapse is output to the file specified by :gf-collapse-output-file. The default is "gfclps.txt" .

LispWorks Delivery User Guide - 7 Apr 2005