SUI is not something that just rhymes with a name in a popular song. It also rhymes with GUI.
SUI (Simplified User Interface) is something we technical writers should take note and embrace. SUI is a graphical means in upholding our mission: Using simple and clear means to introduce our audience to complex and intricate topics.
SUI goes hand in hand with our craft. It's more than just a style of an user interface. There are principles behind it, which is why it caught my attention. SUI upholds the spirit of technical writing itself.
If you want to find out basic information about SUI and why it's useful, then check this out.