Layouts: Grid and Tree
The Grid editor offers two layout modes. The default one is the grid layout. This smart layout detects the recurring elements in the XML document and creates tables having the children (including the attributes) of these elements as columns. This way, it is possible to have tables nested in other tables, reflecting the structure of your document.
The other layout mode is tree-like. It does not create any tables and it only presents the structure of the document.
To switch between the two modes, select Grid mode/Tree mode from the contextual menu.