The invention relates to compositions and methods for treating Obstructive Sleep Apnea. Subscribers can view service issues and repair and update settings, check the status of their devices, and manage device security minimizing customer service calls. A working frame assembly further rotates to the loadunload position. The base material for lithography comprises a cross linking agent formed from a specific nitrogen containing compound, a copolymer comprising two types of acrylate ester units as represented by the general formulas and shown below, and an organic solvent: .