Withdrawal from opioids such as oxycodone causes physical symptoms similar to the flu. Withdrawal also causes psychological symptoms whose demoralizing affects can be just as overpowering as the physical symptoms of withdrawal.
A director is a person from a group of managers who leads or supervises a particular area of a company, program, or project. Companies that use this term often have many directors spread throughout different business functions or roles (e.g. director of human resources).
The board of directors, including the general manager or CEO (chief executive officer), has very defined roles and responsibilities within the business organization. Essentially it is the role of the board of directors to hire the CEO or general manager of the business and assess the overall direction and strategy of the business. The CEO or general manager is responsible for hiring all of the other employees and overseeing the day-to-day operation of the business.