C. EXPLANATION BLOCK
AgPest has a added feature called Explanation Engine.The basic mechanism of the explanation engine in any expert
system is to provide user with the information about decision making and reasoning behind a particular decision. This
explanation engine is quite essential in any expert system.Explanation engine satisfies the user about the decision and
user will beassured of correctness of result produced by expert system. In AgPest explanation block is implemented
using CLIPS 6.0 File system con-structs. In this paper related to AgPest, the explanation block functionality is as follows: