Define the state and instance of properties of object
A state encompasses all properties of object along with values of each of these properties.
An instance is a concrete manifestation of an abstraction to that a set of operations can be applied and that has a state that stores effect of the operation.
A transition is a relationship between two different states indicating that an object in the first state will perform certain action and then enter in the second state when a specific event occurs and particular conditions are satisfied.
A note is a graphical symbol for rendering comments or constraints attached to an element or compilation of elements.