Conventions used

There are a number of text conventions used throughout this book.

Code in text: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: “First, let’s create a file called TokenPair.sol in the src/backend/contracts/ folder.”

A block of code is set as follows:

pragma solidity ^0.8.0;
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "./interfaces/ITokenPair.sol";
contract TokenPair is ITokenPair, ERC20 {

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

<Routes>
  <Route path='/' element={<TokenOperations />} />
  <Route path='/liquidity/*' element={<LiquidityRouter />} />
</Routes>

Any command-line input or output is written as follows:

$ mkdir css
$ cd css

Bold: Indicates a new term, an important word, or words that you see onscreen. For instance, words in menus or dialog boxes appear in bold. Here is an example: “To do that, you can click the icon on the top-right corner of the MetaMask plugin, go to Settings, click Advanced, click the Clear activity tab data button, and confirm the operation in the popup dialog.”

Tips or important notes

Appear like this.