Abstract: Facilitating collaboration in a multi-user communication session may include, at a first device, providing a toolkit of system-level tools for interacting within the session with a second device. A first user interaction with a first tool is detected which results in a virtual modification to an environment of the first device. In response to the first user interaction, the virtual modification is provided for presentation in a second environment representation of the session corresponding to the second device.

Abstract: A state of a multi-user communication session is saved in response to detection of an application state saving event, or a session state saving event. During runtime, application state saving events may be detected for each application executing during a session. Application state parameters are saved in response to each application state saving event, from which the application may be launched to the saved state. In response to a state saving event, the most recent application state information for each application executing in the session are collected and stored such that the multi-user communication session may be launched to the saved state, including each application executing in the session.