Doing vox, I see a few of these green flags pop up. What are they?
 
Admittedly, I'm not really sure how to use IMGUR but here are my 3 attempts to show the image:

<blockquote class="imgur-embed-pub" lang="en" data-id="a/mKBZF"><a href="//imgur.com/mKBZF"></a></blockquote><script async src="//s.imgur.com/min/embed.js" charset="utf-8"></script>
 
Okay, none worked: here's a different link: https://www.screencast.com/t/9QfkHFSJVT5

You put a link to the page containing the image between [img] tags instead of a link to the image itself. Instead of putting https://imgur.com/a/mKBZF between [img] tags put https://i.imgur.com/WGP1Xu6.png
between image tags like this

looks like a peak marker

Measure 49, beat 2?

Y'all suck.
 
Just kiddin. Those are peak flags. green is good yellow is iffy and red is clipping.
 

Thanks, guys. Okay, so if they are peak flags...why isn't the waveform spiking larger???

from the link I posted above

A Peak Marker in each audio track or bus moves along in the Clips pane just behind the Now Time cursor displaying the highest peak found during playback.

Heres your photo uploading lesson