Limitations to queries on aspect roles – A pitfall with respect to aspect roles in queries.

Notifications – An aspect pattern to add notifications to a model

The Body-with-Account Pattern – A pattern for membership.

The context with a presence pattern – Alerting peers when a context has been opened.

The Guest pattern – A guest role in a context.

Add incoming contexts to an indexed context – Usually a model root context - the 'App' - contains a list of embedded contexts. Here we describe how to make such a context appear in one’s app when it has been constructed by a peer.

Detecting property changes – A common pattern is to execute some action on behalf of a user when a property changes value. This requires a careful setup of state.