The grid editor has two modes for the layout. The default one is the grid layout. This smart layout detects the recurring elements in the XML document and creates tables having as columns the children (including the attributes) of these elements. In 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. This layout does not create any table. It presents the structure of the document directly.
You can switch between the two modes using the menu
.