What does a dollar a year salary mean?

Many 'No-Pay' CEOs Actually Were Richly Compensated, Study Finds | workforce.com: "When a corporate chief executive voluntarily forgoes a salary or takes $1 a year in pay, it’s largely symbolic in many cases, according to a report released by The Corporate Library.In 41 companies where the chief executive had either no base salary or a salary of $1 for the year, as well as no cash bonus, 21