First you have to configure the tab which should be displayed in the work area. This must be
an ext.Panel or any extended one. CoreMedia recommends that you configure your tab as a
separate component in EXML. The rationale for this will be described below. In the example
there are two such components: BrowseTab.exml and CoreMediaTab.exml
(where the latter one uses the first one). Both have a configuration parameter
url which is the key to persisting tab state across sessions and website reloads
as explained below in Section 7.12.4, “Storing the State of a Work Area Tab”.
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