+ /* Controls is an array of arrays of the controls, divided into sections.
+ Each hgroup / vgroup gets a nested array, too, e.g.:
+
+ [ [ [ <label>, <checkbox> ],
+ [ <label>, <checkbox> ],
+ [ <label>, <checkbox> ] ],
+ [ <label>, <text-field> ],
+ [ <label>, <low-label>, <slider>, <high-label> ],
+ [ <low-label>, <slider>, <high-label> ],
+ <HTML-label>
+ ];
+
+ If an element begins with a label, it is terminal, otherwise it is a
+ group. There are (currently) never more than 4 elements in a single
+ terminal element.
+
+ A blank vertical spacer is placed between each hgroup / vgroup,
+ by making each of those a new section in the TableView.
+ */