Solves Heat Transfer BVP, IVP, IP problems. Source code + Output files are included. Calculus (level) Programming makes solving partial differential equations, ordinary differential equations and algebraic equations simple. You state the equations, initial conditions, & parameter values and leave the solving method to the compiler. Equations maybe nonLinear, implicit, any order, any degree and/or constrained. Automatic Differentiation coupled with Operator Overloading are the key ingredience for a Calculus-level programming language. Our website introduces Calculus Programming. Our main point is simulating entire company processes, distribution systems, etc. with an eye on ones company goal. This is accomplished by nesting of simulation problems in one Complete simulation run.