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.
9 Surprising Benefits of Coconut Oil. Coconut oil has several benefits such as skin care, hair care, weight loss, treating yeast infections, improving digestion and immunity against a host of infections and diseases. The oil is used not just in tropical countries, where coconut plantations are abundant, but also in the US and the UK.