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

CodeInText: Indicates code words in the text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "According to the BMI scale, someone with bmi between 30.0 and 54 is said to have obesity"

A block of code is set as follows:

import { BrowserRouter } from 'react-router-dom';
ReactDOM.render(
<BrowserRouter>
<App />
</BrowserRouter>,
document.getElementById('root')
);

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

<Route
path="/about"
render={() => (
<div> This is about us page. </div>
)}
/>

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

$ yarn add connected-react-router --exact

Bold: Indicates a new term, an important word, or words that you see on screen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Select System info from the Administration panel."