Yeah, I'm none too happy with the redesign and the broken links (especially with respect to EEM).
I posted this article on setting port descriptions based on the CLUS work. I've since evolved this applet to do so much more. It does dynamic detection of devices, which I created for CLUS, but also auto-detection of default gateway, and a bit better on port documentation.
https://community.cisco.com/t5/network-architecture-documents/automatically-set-port-descriptions/ta-p/3119769
