The following inputs are processed into the program:
· Fuel Type (Using pre-defined fuel models)
· Average Wind Speed
· Average Slope
· Wind Direction
· Slope Direction
· One Hour Moisture Content
· Ten Hour Moisture Content
· Hundred Hour Moisture Content

The program then takes each individual input and processes it through each individual cell in the given area, thus creating an environment and landscape for the fire to burn on. After this environment is created the program will ignite a “fire” in the center cell of the environment. The fire will then burn until either all cells are burnt or the fire reaches the boundaries of the environment area. After all this is complete, the program evaluates each individual cell to determine the outputs.
The following outputs collected and processed as a whole and printed by the computer program:
· flame length (length of flame from top to where it leaves the ground),
· spread rate (the rate at which the fire spreads throughout the cells,
· heat generated by the fire per square foot of fuel, and the
· fire line intensity at the current azimuth.

A complete table of the pre-defined fuel models can be found in Appendix 1: Mathematical Models and Inputs under Table 1-1. Fuel models consist of the type of fuel located on the prescribed fire area. For examples, fuel model one consists of short grass(one foot). It has 0.74 tons per acre of one-hour fuel loading, a bed depth of one foot, and a 12 percent moisture content of the dead fuels. The following figure (figure1-1) demonstrates the measurements of flame depth, and flame length in relation to a fire.