Switch-Case
Switch marks the beginning of a switch block. Unlike if-else or else-if conditional statements, a switch block can address a number of possible execution paths. A switch statement is a type of selection control mechanism used to allow the value of a variable or expression to change the control flow of your scripts via a multiway branch:
Case specifies a condition on an existing Switch block and marks the beginning of a sequence of actions that will be executed if the conditional evaluates to true.
The end of this sequence of actions is marked by the complimentary to Case, End Case action.
End Switch marks the end of a Switch block.