Cost Calculator Documentation : Engine
============
# Introduction
* The engine works with [ReactJS](https://reactjs.org/) and [Bootstrap](https://getbootstrap.com/) both are opensource libraries.
* several js files (in the **js** folder) make the engine
    * **data.js**  contains the cost database
    * **costcalc_main.jsx** contains the main engine functions
    * **costcalc_export.jsx** contains a set of subroutines for the export
    * **costcalc_money.jsx** contains a set of subroutines for managing currency conversion
   
* styles are customized using css (in the **css** folder)