Abstract: An interfacing structure for a mask system includes a cushion component adapted to contact the patient's face in use and a cushion-to-frame component provided to the cushion component. The cushion-to-frame component is structured to secure the cushion component to a mask frame of the mask system. The cushion-to-frame component includes a cushion side adapted to interface with the cushion component and a frame side adapted to interface with the mask frame. The cushion side includes a platform to engage and support the cushion component. The platform provides an engagement surface to engage the cushion component and inner and outer flanges provided to opposing ends of the platform to guide, support and/or retain the cushion component on the platform.

Abstract: Many machines, particularly computers, execute decision processes during their operation. Such decision processes generally involve ascertaining the values of a number of condition factors and then determining the desired outcome in accordance with a predetermined decision function. This decision function may take the form of a number of individual statements relating condition-factor value combinations to particular outcomes. To facilitate end-user generation and modification of a decision function by generation and modification of a set of component statements, a structured representation for the component statements is presented to the user and statements are created and modified within this structured environment. Before a new or modified set of statements is accepted, it is checked for consistency between statements.