From the text...'FOFEM 4.0-A First Order Fire Effects Model-is a computer program developed to meet the needs of resource managers, planners, and analysts in predicting and planning for fire effects. Quantitative predictions of fire effects are needed for planning prescribed fires that best meet resource needs for impact assessment and long-range planning...In developing FOFEM, we searched fire effects literature for predictive algorithms useful to managers. These algorithms have been tested over a range of conditions to evaluate the validity of their predictions. We also determined the conditions under which each is best suited by examining the documentation of these algorithms. A major internal component of FOFEM is a decision key that selects the best available algorithm for the conditions specified by a user. We have incorporated the algorithms in an easy-to-use, menu-driven, computer program. Realistic default values have been provided for a range of inputs. These defaults derived from a variety of research studies, can be overridden by the user, allowing use of FOFEM at different levels of resolution and knowledge.'