Contains keywords determining behavior on exceptions raised when an action definition already exists in a given action list.
A list containing one of
:warn
, or
:silent
, determining whether to notify the user, and one of
:skip
, or
:redefine
, to determine what to do about an action definition when the action already exists in the given action-list. The default value is
'(:warn :skip)
. It is used by
define-action
.