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Follow this link for an Introduction to KBF.

Description
The KBF program does not recalculate values every time the contents of a window changes. Each command corresponds to a button in the Command window . These buttons are used to initiate the calculation and display of values by KBF.

Contents
The Load Command and Dialog
The Save Command and Dialog
The Data Command
The Compile Command and Dialog
The Fit Command and Dialog
The Simulation Command and Dialog
The Plot Command and Dialog
The Table Command and Dialog