The "Function Buttons Cluster" of icons are what enables an end user to run functions against the various Lists. The Bucket List, the Keyword List and the Item List.

These icons, when clicked while in INFO MODE, show information about what the function does. The panel, on the far right, will display what each function does in detail, when you click a function icon while in INFO MODE.

If you wish to run a function for real, then you must toggle out of info mode, by clicking the informational icon in the horizontal cluster of buttons at the bottom of the screen (above the message section).

You can do things like add/delete buckets and keywords, run slideshows, or get Google Statistics, plus more.

To toggle out of INFO MODE, click the info icon again.