Compounds that provide for sustained systemic concentrations of GABA analogs following oral administration to animals are disclosed. The system, methods and kits are easy to use, reliable, sealed to prevent contamination, and can be stored on location, for use on demand by those unskilled in the microbiological arts. An incoming communication can be handled by the voicemail system and provided with functionality based upon, for example, preferences of a user. The ink may be applied in sufficient amount to achieve a color density comparable to that obtained using other printing processes such as flexographic or gravure printing processes. The work item from the top of the list is processed first.