  Our experience with a critiquing system shows that when the system detects
problems with the user's performance, multiple critiques are often produced.
Analysis of a corpus of actual critiques revealed that even though each
individual critique is concise and coherent, the set of critiques as a whole
may exhibit several problems that detract from conciseness and coherence, and
consequently assimilation. Thus a text planner was needed that could integrate
the text plans for individual communicative goals to produce an overall text
plan representing a concise, coherent message.
  This paper presents our general rule-based system for accomplishing this
task. The system takes as input a \emph{set} of individual text plans
represented as RST-style trees, and produces a smaller set of more complex
trees representing integrated messages that still achieve the multiple
communicative goals of the individual text plans. Domain-independent rules are
used to capture strategies across domains, while the facility for addition of
domain-dependent rules enables the system to be tuned to the requirements of a
particular domain. The system has been tested on a corpus of critiques in the
domain of trauma care.
