MyContexts is a framework application with little functionality by itself. You add functionality by downloading a model file from a repository. Let’s do that now. You’ll add a model to your installation that provides you with a perspective on a context that holds a list of chats. You’ll be able to create fresh contexts in which you can actually chat with a peer (provided that you are connected to any peers, of course).

Go to Manage new models. At the bottom of Default (Base) Repository, a form with just the field Domain, double-click the small white rectangle with the text perspectives.domains. We call rectangle like this cards. This will open a new context (that of the repository for perspectives.domains), showing a table Manifests. These describe models that can be added to your installation.

Select the row Simple Chat (by clicking in the column Name on the row with that name). Double-click it to open a new context: the manifest for Simple Chat. Notice the bottom table, Model versions Now, in that table’s controls, click the thunderbolt icon. A drop down menu appears having the item StartUsing. Select that item. The cursor changes to the 'waiting' shape. This will take a few seconds.

Now, if notifications are still turned on, within a few seconds a notification will appear saying model:SimpleChat added!. Inspect the Notifications table at the bottom of the screen and find that notification, there, too.