<itemvalue="The type of default menu this is. See [PlatformProvidedMenuItemType] for the different types available. Not all of the types will be available on every platform. Use [hasMenu] to determine if the current platform has a given default menu item. If the platform does not support the given [type], then the menu item will throw an [ArgumentError] in debug mode."/>
<itemvalue="inverted stylus"/>
<itemvalue="inverted stylus"/>
<itemvalue="stylus"/>
<itemvalue="stylus"/>
<itemvalue="Distance in proportion of the viewport's main axis length from the leading edge of the viewport to the trailing edge of the item. May be greater than one if the item is partially visible."/>
<itemvalue="Distance in proportion of the viewport's main axis length from the leading edge of the viewport to the trailing edge of the item. May be greater than one if the item is partially visible."/>