On the key for site logo, I don't know if one exists or not; if it doesn't exist, you could create it. As for a list of the keys, unfortunately, there is no manual for UNA; just like there wasn't a manual for Dolphin. You will have to compile your own list of what keys are available. Most are self explanatory. Get a programme that will allow you to search files; a popular one for windows is Notepad++.