@Deplorable I found the solution I was looking for:

https://github.com/eouia/MMM-HTMLBox.

For whatever reason it isn’t listed on the “3rd Party Module” page although it should be… Works fine. Thanks for the solutions offered re: iFrame…

I have tried all of the various iFrame modules and while I can display sites ( for example www.bing.com) I have failed utterly in displaying a local html file (/home/pi/intro.html). The file is very basic and works just fine in all browsers I have tested it on. Is there a module that will display this file? Thanks!