Conventions used

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

CodeInText: 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: "Custom Drupal 8 modules typically belong inside the /custom directory of the /modules folder found inside the root Drupal installation."

A block of code is set as follows:

name: Hello World
 description: Hello World module
 type: module
 core: 8.x
 package: Custom

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

cd core

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: "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."