API/manual for ie4uinit command?

So, I found that the command to refresh file icons in Windows Explorer is ie4uinit -show or ie4uinit.exe -show

I wanted to find more on the executable/command, but couldn’t find any documentation on the topic.

I tried running:

help ie4uinit

ie4uinit -h

ie4uinit --help

ie4uinit /?

Neither of them return anything. What is this and where I can find more info on how to use it (specifically what command line switches does it have)?

Google returns nothing but “is ie4uinit a virus?” results