Maps contain resources that help resolve references when they are set as context maps.
Maps contain resources such as keys, which help resolve references. When you set a map as a context map, references in documents are resolved based on the keys in the map. So, different maps can resolve references differently based on the keys defined. When there is no context map selected, your references don’t resolve and no content displays.
Let’s look at an example of how setting a context map resolves content key references. In the example below, the conkeyref vars/productName displays, but the content being referenced doesn’t display. This is because maps contain key names and definitions, so when a context map is not selected, the conkeyref isn’t referencing any content.
However, once you set a context map, the keys and key references defined in the map are resolved. For example, selecting m_t1000 as the context map displays the vars/productName key as the Epic Range T1000.
If you change the context map, and the keys and key references use the same ID but link to different content, the keys are maintained but the content being referenced changes. For example, selecting _m_t1300 as the context map displays the vars/productName key as the Epic Range T13000.