I know how references work internally, but those are details not really needed to understand references and aliases. As for visually equalizing $name and $alias, I usually do the diagram interactively, in front of a blackboard, starting with the middle line of my diagram. And then I won't wipe out the $name box to draw it a bit lower (or higher).
in reply to Re^2: The Concept of References
in thread The Concept of References