About menu item XML attributes

The attributes of a menu item XML element determine what is displayed, how the menu item behaves, and how it is exposed to ActionScript. The following table describes the attributes of an XML menu item:

Attribute name	Type	Default	Description
`label`	String	`undefined`	The text that is displayed to represent a menu item. This attribute is required for all item types, except `separator`.
`type`	`separator`, `check`, `radio`, `normal`, or `undefined`	`undefined`	The type of menu item: `separator`, `check box`, `radio` `button`, or `normal` (a command or submenu activator). If this attribute does not exist, the default value is `normal`.
`icon`	String	`undefined`	The linkage identifier of an image asset. This attribute is not required and is not available for the `check`, `radio`, or `separator` type.
`instanceName`	String	`undefined`	An identifier that you can use to reference the menu item instance from the root menu instance. For example, a menu item named yellow can be referenced as `myMenu.yellow`. This attribute is not required.
`groupName`	String	`undefined`	An identifier that you can use to associate several radio button items in a radio group, and to expose the state of a radio group from the root menu instance. For example, a radio group named colors can be referenced as `myMenu.colors`. This attribute is required only for the type `radio`.
`selected`	A Boolean value (`false` or `true`) or string (`"false"` or `"true"`)	`false`	A Boolean or string value indicating whether a `check` or `radio` item is on (`true`) or off (`false`). This attribute is not required.
`enabled`	A Boolean value (`false` or `true`) or string (`"false"` or `"true"`)	`true`	A Boolean or string value indicating whether this menu item can be selected (`true`) or not (`false`). This attribute is not required.

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