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.
About. 1  Walnuts have innumerable health benefits. Walnut is an edible seed of the tree nut Juglans regia. 2  The tree serves a multitude of uses; it can be used as food (edible seed), medicine, furniture and dye. The walnut seed has a number of health benefits ranging from weight management to prevention and slowing of various cancers. Walnuts Nutrition Facts: Walnuts are high in protein, vitamins, omega 3 fatty acids, trace minerals, lecithin and oils.