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: "The widget method starts by calling the standard PHP extract function on the first parameter received, an array named $args, which contains a list of styling tidbits to render the widget."

A block of code is set as follows:

class Book_Reviews extends WP_Widget {
    function __construct () {
        parent::__construct( 'book_reviews', 
            'Book Reviews',
            array( 'description' =>
                   'Displays list of recent book reviews' ) );
    }
} 

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

</tr><tr>
<td colspan="2">
<div class="g-recaptcha"
data-sitekey="[my-site-key]"></div>
</td>

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

npm install --save-dev --save-exact @wordpress/scripts

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: "Publish the new page and click on View Page to see the block on your development site."

Tips or Important Notes

Appear like this.