Abstract: Technologies are disclosed that enable a computing system to present a structured arrangement for tracking content items on a shared user interface (UI) during a communication session. The structured arrangement is a list that is displayed in a specific region of the shared UI. Inclusion of content items in the list makes it easier for users to locate and interact with those content items throughout the communication session. The ability to create and manipulate the list may be limited to only certain users such as a moderator. Use of this list can promote inclusivity and fairness. For instance, inclusion in the list may prevent content items from being forgotten or ignored. Additionally, the names of users who contributed the content items may be shown in the list thereby providing recognition for those users.

Abstract: A rotary valve is described that includes a rotary valve member including a flow control region, and a valve seat surface with which the flow control region of the valve member is in engagement, a flow port opening into the valve seat surface. The flow port is positioned such that, in a first angular position of the valve member, the flow control region fully closes the flow port and in a second angular position the flow port is just fully unobscured by the flow control region. The first and second angular positions are spaced apart from one another by an angle in excess of 180°.