I finally got past this step but I'm going to nitpick on a couple of things, because I'm a horrible selfish person and doing this will help me remember what I learned. Yes, I can only remember things by making a big stink about something. Sorry!
First of all, the previous 172 exercises have taught me that it is important to read and pay attention to every single word on the screen. The fact that each lesson is so brief makes each word that much more important to pay attention to. Even the commented code is not to be ignored. Therefore, I was confused and troubled that this comment did not mean what it seemed to mean:
I thought it was telling me to modify that line of code in order to test the function. Previous exercises did require changes to the console.log line, right? Hmmm...
Then, in the blank area under the Reset | Help | Bug buttons, after hitting "Run" the first time, I see the following test cases:
Now, after deciding to set this aside until later, and getting the exercise to work, and seeing that the test cases all work after the exercise is done correctly, I can retrospectively understand that we are probably supposed to ignore this area. But try telling that to someone who is struggling with this exercise and looking everywhere for clues. It's really confusing!
Wait. I'm not done yet.
When I read the title of this page, "Stand in Line," and then read about queues and data structure, I could not tell if this was a new thing that functions can do? Is this a new topic? Are we going to be writing code that looks like function arr.queue(); ?
Now that I know what it is, I think that the concept of a queue and data structure (in my opinion) probably should have been introduced along with arrays in the first place. It makes a lot of sense to me that arrays would/should be kept in order.
So, the conclusion of my tiresome essay is, there were several factors that contributed to making this particular exercise especially confusing to me, and I don't think it needed to be. A teeny tiny little hint - well, more than what was there - that this is like, a review/practice step, or something like that? Make the title a different color, perhaps?
I know there are plenty of people who probably thought this was a piece of cake, totes OBV, fer sher, so if you think I'm just obtuse, please just try to be tolerant. Thank you.