The following keywords are for examining, for keeping and for removing data information in the image about structured data: structures, classes and so on.
:classes-to-keep-effective-slots
:generic-function-collapse
:gf-collapse-output-file
:gf-collapse-tty-output
:keep-clos
:keep-clos-object-printing
:keep-structure-info
:metaclasses-to-keep-effective-slots
:shake-class-accessors
:shake-class-direct-methods
:structure-packages-to-keep
LispWorks Delivery User Guide - 13 Dec 2011