SCED/xml/Global/BottomBar.xml

<Defaults>
  <Button class="navbar"
    tooltipPosition="Left"
    tooltipBackgroundColor="rgba(0,0,0,1)"
    color="clear"/>
</Defaults>

<!-- Buttons at the bottom right (height: n * width + spacing) -->
<VerticalLayout visibility="Admin"
  color="#000000"
  outlineSize="1 1"
  outline="#303030"
  rectAlignment="LowerRight"
  width="38"
  height="78"
  offsetXY="-1 123"
  spacing="2">
  <Button class="navbar"
    icon="devourer"
    tooltip="Downloadable Content"
    onClick="onClick_toggleUi(downloadWindow)"/>
  <Button class="navbar"
    icon="option-gear"
    tooltip="Options"
    onClick="onClick_toggleUi(optionPanel)"/>
</VerticalLayout>

<!-- Navigation Overlay button (not visibly to Grey and Black) -->
<Panel visibility="White|Brown|Red|Orange|Yellow|Green|Teal|Blue|Purple|Pink"
  color="#000000"
  outlineSize="1 1"
  outline="#303030"
  rectAlignment="LowerRight"
  width="38"
  height="38"
  offsetXY="-1 85">
  <Button class="navbar"
    icon="NavigationOverlayIcon"
    tooltip="Navigation Overlay"
    onClick="onClick_toggleUi(Navigation Overlay)"/>
</Panel>