Need for reference path on project/properties

Question

Sorry, novice question here, but what is the need for the reference path on the project/properties?  I find that I am perfectly able to add assemblies via the 'Add Reference' by right-clicking the reference folder and navigating to the correct directory.  I can do this without having to enter anything onto the project properties.
I am sure that there is a perfectly good reason, but I cant see it at the moment.
Thanks
Paul

Answer 1

SELECT Empid,Empname,Deptname
FROM Employee
INNER JOIN Department ON Department.Deptid = Employee.Deptid

This is the best code.

Answer 2

SELECT Empid,
            Empname,
            Deptname
FROM Employee
INNER JOIN Department ON Department.Deptid = Employee.Deptid