The display of elements and attributes depends upon the option you choose from the tabbed layout. In the picture below, the tree structure display is selected.

Elements have a header that provides further options, as shown in the picture below.

The attributes of elements are shown in a tabbed layout, as shown in the picture below. The current tab is highlighted with a thin blue stripe to the left of the tab name.

The dotted underline for the attribute values can be clicked to edit the values.