In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "As mentioned previously, the ZIP files are similar to the Linux binary .tar.gz files and they are only recommended for those who know that they want it."

A block of code is set as follows:

CREATE TABLE employees (
    id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
    surname VARCHAR(100),
    givenname VARCHAR(100),
    pref_name VARCHAR(50),
    birthday DATE COMMENT 'approximate birthday OK'
);

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

brew doctor

New terms and important words are shown in bold. Words that you see on the screen, for example, in menus or dialog boxes, appear in the text like this: "The Install as service box is checked by default, and it is recommended to keep it that way so that MariaDB starts up when the computer is booted."