The following keywords can be used to help test and debug the application either during delivery or at runtime. There are keywords for encoding test routines into the delivered application, for ensuring that features such as the debugger and the read-eval-print loop are kept in the image, for performing delivery without writing the image out to disk, and so on.
:analyse
:call-count
:clos-info
:condition-deletion-action
:diagnostics-file
:error-on-interpreted-functions
:post-delivery-function
:in-memory-delivery
:interrogate-symbols
:keep-conditions
:keep-debug-mode
:keep-modules
:keep-stub-functions
:keep-symbol-names
:keep-top-level
:kill-dspec-table
:run-it
:symbol-names-action
:warn-on-missing-templates
LispWorks Delivery User Guide - 13 Dec 2011