A recording head records an image on a medium. When Ms, Mn, and Mc each are inertances of the liquid supply channel, the nozzle opening, and the flow channel for circulation, a relationship of Ms\u2267\u22121 is established. In response to the first messaging protocol message, at least a second messaging protocol message may be communicated between the second switch, first access point, andor a second access point. This provides custom routes to each user that are designed to be optimized for safety or speed depending on user input. The application server module can be configured to receive a request by virtue of being configured to communicate information regarding the request to the database for inclusion in the commercial transaction information. The selected region is then used for automatically cutting the material andor catapulting the object, or serves as a working region in which the material is cut or from which the object is catapulted.