JavaScript contains both Keywords that you must use to achieve specific results and Reserved words that you are not permitted to use for variable or function names.
Since JavaScript is case sensitive, using lower case to refer to language objects will result in an error.
If you want to declare a variable that can be accessed by more than one function or script block in your program, you will need to declare the variable ___________________.
The _________ method, allows you to create text that is dynamically written to the window as the script is executed.