Multi-layer flexible transfer tapes are provided which are useful for covering printing or typing errors in texts or drawings so that corrections may be made. Integrated circuitry is positioned on the substrate and includes drive circuitry. In accordance with another aspect of the invention, a funnel is provided which includes multiple adjacent panels and a glue strip adjacent to one end, which enables the funnel to be manufactured with conventional process machines. An enhanced compiler is capable of analyzing the annotated source file and automatically generate the bytecode required to create, deploy, and manage the persistence of POJOs without requiring knowledge of specific details of the persistence to corresponding data entities in the underlining database. Fluctuations in transmitted light intensity are then correlated with detection of opaque inclusions in the sample.