labwc/docs/menu.xml

<openbox_menu>
  <!-- Note: for localization support of menu items "client-menu" has to be removed here -->
  <menu id="client-menu">
    <item label="Minimize">
      <action name="Iconify"/>
    </item>
    <item label="Maximize">
      <action name="ToggleMaximize"/>
    </item>
    <item label="Fullscreen">
      <action name="ToggleFullscreen"/>
    </item>
    <item label="Roll Up/Down">
      <action name="ToggleShade"/>
    </item>
    <item label="Decorations">
      <action name="ToggleDecorations"/>
    </item>
    <item label="Always on Top">
      <action name="ToggleAlwaysOnTop"/>
    </item>
    <!--
      Any menu with the id "workspaces" will be hidden
      if there is only a single workspace available.
    -->
    <menu id="client-send-to-menu"/>
    <!--
      openbox default workspace selector
      to use replace above workspace menu with the example below
      the label is required, but you can change the text.

      <menu id="client-send-to-menu" label="Send to..." />
    -->
    <item label="Close">
      <action name="Close"/>
    </item>
  </menu>
  <menu id="root-menu">
    <!--
      Make client-list-combined-menu a submenu of root-menu
      You must supply a label or it will not appear in root-menu
    -->
    <!--
      <menu id="client-list-combined-menu" label="Running..." />
    -->
    <item label="Terminal">
      <action name="Execute" command="lab-sensible-terminal"/>
    </item>
    <separator/>
    <item label="Reconfigure">
      <action name="Reconfigure"/>
    </item>
    <item label="Exit">
      <action name="Exit"/>
    </item>
    <!--
      # A prompt can be used as follows:
      <item label="Exit">
        <action name="If">
          <prompt message="Do you really want to exit the compositor?"/>
            <then>
              <action name="Exit"/>
            </then>
        </action>
      </item>
    -->
  </menu>
  <menu id="some-custom-menu">
    <!--
      Creates menu title.
      To create an empty header with no text,
      set label=" ", not label=""
    -->
    <separator label="custom menu"/>
    <item label="Reconfigure">
      <action name="Reconfigure"/>
    </item>
    <item label="Exit">
      <action name="Exit"/>
    </item>
  </menu>
</openbox_menu>