In general overview, the present disclosure is directed to a system and method for selectively displaying a frame of an application user interface on a mobile computing device. The fluorocarbon film contains nitrogen and is low in dielectric constant, excellent in reproducibility and stable. A first fin, preferably a first and a second fin, projects from the substantially flat internal surface of the plate and bend the hair strand into the containment portion while the applicator is in use. When de-allocated sectors in the file system are pruned from a file or escaped the file deletion process also finds them. The rotating phasor signal is multiplied with the sample data stream to correct the frequency of the sample data stream.