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Truffle Boxes are sample applications in the form project templates. Boxes come with libraries and tools already preinstalled, code that uses those libraries, scripts (if necessary) and documentation. Each box comes with everything you need to build a complete dApp - decentralized application on RSK networks. It also includes a smart contract to store and retrieve a number, the name for the smart contract is called SimpleStorage and it is an example for deployment. It is a real dApp-based library web3, meant for the best way to learn a React-based App-based application for a single application.