1 An actor is a person, organization, or external system that plays a role in one or more interactions with your system. 2  Actors are drawn as stick figures. 3  Associations. 4  Associations between actors and use cases are indicated in use case diagrams by solid lines.
Beauty benefits of walnut oil (Thinkstock photos/Getty Images) High in vitamins and proteins, walnut oil works wonders for your skin. Apart from eating walnuts, the use of it in the form of oil also helps your skin. They are known to be rich in fibre, Omega-3, protein and other vital minerals. Fights wrinkles.
7 Amazing Benefits of Black Walnut The important health benefits of black walnut include its ability to treat a wide variety of skin conditions, improve heart health, provide antifungal protection, reduce inflammation, stimulate circulation, lower blood pressure, and prevent certain types of cancer. Black walnut also boosts the immune system and regulates digestion. What is Black Walnut?