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: "Hook implementations typically go inside a .module file, so let's create one in our module folder called hello_world.module and place an opening PHP tag at the top."

A block of code is set as follows:

/** 
 * @file 
 * Hello World module file. 
 */ 

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

../vendor/bin/phpunit tests/Drupal/Tests/Core/Routing/
UrlGeneratorTest.php

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: “Users can now reach this page from the module administration page by clicking on the Help link for each individual module that has this hook implemented.”

Tips or important notes

Appear like this.