A humidifier assembly for a CPAP apparatus includes a liquid storage container configured to hold a body of liquid. A security server system tracks the content that has successfully passed through its security modules and distributes this information to the end user client devices as hashlist information. The cushion has a chin support area that avoids contacting the user’s chin when the user’s head is in a neutral position and contacts the user’s chin when the user’s neck is in flexion. The surfaces may be either textile surfaces or polymer surfaces. The repair controller compares the memory-access addresses to repair addresses and diverts access from defective memory chips to a spare memory for the repair addresses. The OPGACV controls a running Object Process Graph application by inducing a Dynamic Graph Interpreter to transition applications from one state to another, and using application designeruser defined properties, it renders application state, structure, and data on display mediums and validates data inputs to applications.