.</p>
  <p>Toggle Lock with <kbd>Ctrl</kbd> + <kbd>Shift</kbd> + <kbd>Right
  Drag</kbd> behaves as line edit. When right mouse button (RMB) is
  pressed, it holds the opposite state of the bar below mouse cursor,
  then use the state for the rest of bars. For example, if RMB is
  pressed on a locked bar, dragging unlocks bars while holding down
  RMB.</p>
  <p>Some BarBox has scroll bar to zoom in. Scroll bar has handles on
  left end and right end. To control zoom, use <kbd>Left Drag</kbd> on
  one of the