A declaration is a specially structured sequence of names that identifies one or more items.

Declarations are structured with an optional traversal (/-separated names), followed by an optional group (name followed by a .), followed by a name representing the item(s). All declarations have at least an item, except for group set declarations which explicitly have a group without an item following it.

The following examples use the notation from LName: the outer braces are the name and the inner braces are its expandables. A traversal adds a third level because it is a list of names.

Left Pane                       // item = {{"Left"}, {"Pane"}}

End.Position                    // group = {{"End"}}
                                // item = {{"Position"}}

End.                            // group = {{"End"}}
                                // item = {}

Window/(Left,Right) Pane        // traversal = {{{"Window"}}}
                                // item = {{"Left","Right"}, {"Pane"}}

(Cancel,Confirm) Button/Fill    // traversal = {{{"Cancel","Confirm"}, {"Button"}}}
                                // item = {{"Fill"}}

Window/Titlebar/Exit Button     // traversal = {{{"Window"}}, {{"Titlebar"}}}
                                // item = {{"Exit"}, {"Button"}}

Button/Layout.Direction         // traversal = {{{"Button"}}}
                                // group = {{"Layout"}}
                                // item = {{"Direction"}}