Presenting options

You can configure the same module differently, depending on where it is located. Options can be presented to a parent module from a child module to make them visible as though they were part of the public interface for the parent module. For example, the Number of shelves option is presented up from the carcass module to the refrigerator freezer module, allowing you to choose the value at the parent level. You could also use the present method if you want to set options for different occurrences of the same module to different values, depending on their location. You could place the door module in a refrigerator freezer assembly with this method. In this example, the same door module is used twice, once as a freezer door and once as a refrigerator door. The options created previously control the components of each door and the doors have different components due to their different functions. You can name each occurrence of the door appropriately, for example, top and bottom. You then present the Application option (with possible values refrigerator and freezer) for each door to the parent refrigerator freezer module. This gives two options to set in the refrigerator freezer module, one for each door; you can set these to different values.