Note
This content does not apply to Commerce versions 14+.
Any application may extend the left menu navigation. You also can add, delete, or change an existing tab by creating the _LeftMenu.xml_ file.
## Link to an existing tab
The following image and code sample show how to add a link (**Countries**) to an existing tab in left menu.

## Add a tab to the left menu
The following example shows how to add an empty tab within Order Management.
## Remove tabs
The following example shows how to remove a tab within Order Management.
## Modify a link in a tab
The following example shows how to remove the **Core\_CountriesDictionary** link from the **Order Management** tab.
## XML description
The **Tab** element can contain the following attributes:
**id** (text) – Unique identifier within xml file.
**text** (text) – Text displayed by the tab. Can contain a resource string with the following format: {ResourceName:ResourceKey}.
**order** (int) – Weight, which determines the location of the tab.
**imageUrl** (text) – Relative image path for the tab.
**enableHandler** (text) – Fully qualified class name for the tab EnableHandler (if EnableHandler returns false, the tab is not displayed in the left menu). The class must implement the ICommandEnableHandler interface.
**permissions** (text) – Parameter passed as a **CommandParameter** value to the EnableHandler.
The following example shows how to retrieve permissions in the EnableHandler class:
The **Link** element can contain the following attributes:
**id** (text) – Unique identifier within XML file.
**text** (text) – displayed by the element. It can contain a resource string with the following format: {ResourceName:ResourceKey}.
**order** (int) –, which determines the location of the element.
**imageUrl** (text) – Relative image path for the element.
**enableHandler** (text) – Fully qualified class name for the element EnableHandler (if EnableHandler returns **false**, the element is not displayed in the left menu). The class must implement the ICommandEnableHandler interface.
**iconCss** (text) – Css class for the menu image.