# Services XML Properties The `Services.xml` file is used to register all the various [Navigation Service XML files](navigation-services-xml-properties/) that are to be used as part of one or more packages. This file is formatted using [XML](../../devmode/editors/project-editor/file-formats/xml-files/) and can be edited by using any text editor. The general format for the file is as follows: ``` xml ```   Navigation services can be used by airports - as part of [Apron Services](../environment/airports-and-facilities/apron-services/apron-services-overview/) - and by SimObjects, like aircraft. However, in all cases the package setup is the exact same: create an [SPB](../../devmode/editors/project-editor/asset-types/#SPB) asset group called **CabinServices**, and inside that add the `Services.xml` file: {{< image-center src="images/5_Content_Config/Missions/cabin_services_1_services.png" alt="Example Of Where To Create A Service XML File" >}}   The following XML is an example of how this file will look once created: ``` xml ```     ### <SimBase.Document> This is the main parent element that is used to contain the navigation service file data. This element should have the following sub-element: 1. ``   This element has the following attributes:   {{< table-wrapper >}} | Attribute | Description | Type | Required | |-----------|------------------------------------------------------------|--------|:--------:| | `type` | The type of SimBase file. Should always be "CabinService". | String | Yes | | `version` | The file version. | Float | No | {{< /table-wrapper >}}     ### <CabinService.Services> This is is a container element that is used to list the different [Navigation Services XML Files](navigation-services-xml-properties/) that should be registered as part of the simulation navigation controller. It has no attributes and requires one or more of the following sub-element: 1. ``     ### <Service> This element is a sub-element of `` and is used to define a single service XML file that is to be registered with the simulation navigation controller. This element has the following attributes:  
AttributeDescriptionTypeRequired
NameThis is the "common" name of the navigation service XML, which will be used in other files to reference the service.StringYes
Filename

This is the file name of the XML file, without the file extension. For example if the file is called PassengerService.xml, then this attribute will be written as follows:

Filename = "PassengerService"

StringYes
FoldernameThis is the name of the folder where the services XML will be found.StringYes
AlternativeBoarding

If this is set to "True" then it disables the classic passenger boarding option in the ATC when this service is spawned.

Default value is "False".

BooleanNo