A line generator includes a housing carrying a light source for emitting a light beam and a mounting surface for removably mounting the generator on a surface. Specifically, the present invention evaluates a company’s spread through that company’s debt and equity costs. These labeling reagents are useful for labeling probes or targets, including nucleic acids and proteins. an electric circuit switching consisting of at least one coil and at least one capacitor for tuning harmonic signals resulting from amplifier non-linearities. The graphic image includes hidden or latent images printed within the graphic image layers.