The tag cloud allows you to navigate the full set of Items - in other words, to navigate at "ground" level. Click on any one tag, or run a query by checking the boxes next to two or more and then on the "Filter" button at the bottom of the display. Remember that the query will produce a list of Items with a partial view of the associated metadata. To inspect all of the information pertaining to a particular Item, click on the Item title. Go to the Tag Cloud.