An example approach is provided for presenting content in a user interface associated with social networking messages based on gaze tracking information. 5 and soluble in aqueous media above pH 4. For example, the state data may define a currently available size; each piece of content has associated size properties that can be matched in the selection process. Such nickel wires can be mechanically transformed into a continuous mesh, especially a tube, from which sections having a suitable length can be cut and be provided with the proper shape. Electronic components andor wiring patterns may be disposed in the space.