\textit{Abc} = Focusable

\textbf{Abc} = Owns focusable child

{Abc} = Not Focusable


\Tree[.\textbf{\textit{WindowContainer}}
  [.\textbf{FlowContainer (Vertical)}
    Label
    \textit{HScrollBar}
    [.\textbf{AlignContainer}
      [.\textbf{FlowContainer (Horizontal)}
        [.\textit{Button}
          [.AlignContainer
            {Label (Cancel)}
          ]
        ]
        [.\textit{Button}
          [.AlignContainer
            {Label (OK)}
          ]
        ]
      ]
    ]
  ]
]