An important question in the design of a computer-based argumentation
support tool is how such a system would interface with the decision en
vironment within which it operates. One aspect of this interaction is
the effect of decision environment on the selection of each warrant. T
he purpose of the present article is to suggest a grammar of types of
relevant objects such as SOLUTION and CONFLICT and to hypothesize that
these elements determine the appropriateness of WARRANT used.