What does it means by "drop down" jar assembly?

<p>Perhaps you've heard what is a "drop down" jar assembly on the internet. This refers to a simple, user-friendly design, that helps you putting in or taking out the jar with practical mechanism.</p> <p>The Blender jar rests directly on the base with no need for twisting or locking the jar into place. This also simplifies removing the jar from the Blender base by making it easier to lift off as well. </p>