<panel size='400' color='0' interval='1' context='menu'>
    <button onclick='menu.page="worlds"'>@Worlds</button>
    <button onclick='menu.page="scripts"'>@Scripts</button>
    <button onclick='menu.page="settings"'>@Settings</button>
    <button onclick='menu.page="content_menu"'>@Contents Menu</button>
    <button onclick='core.quit()'>@Quit</button>
</panel>
