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).
As a group the directors are responsible for the policy making, but not day-to-day operation, which is handled by officers and other managers. In some cases, a director may also be an officer, but need not be a shareholder. Most states require a minimum of three directors on corporate boards.