These must be called after
must be one of the legal keywords to
(which are listed in Alphabetical list of deliver keywords, or can be displayed by calling
returns the value associated with this keyword. When
is called, the values associated with each keyword are initialized from the arguments to
or using their default values (which are listed by
, or set to
. They can be modified later by user actions that were added to the "Delivery actions" action-list, and then by the system. Before starting the shaking operations, the values of the keywords are reset, and
cannot be called after the shaking.
can beused to set the value of a keyword. Since the user actions are done before the system ones, the system actions (which also use
to access the keywords value) will see any change that the user actions did.