Default value: (when (> *delivery-level* 0) :delete)

The value is one of:


Do not delete any condition class. This is the default at severity = 0.


Delete unwanted conditions. If an error for a deleted condition is signaled, it is signalled as a simple error condition, with the arguments in the format-arguments slot. This is the default at severity > 0.


Redirect unwanted conditions to the first parent in their hierachy which is not deleted.

See Deleting of condition classes.

LispWorks Delivery User Guide - 12 Sep 2005