A communication device includes an RF transceiver for communicating first data with at least one of a plurality of remote communication devices via a first protocol and a first frequency band. The Internet appliance and system server define communication and control protocols based on server maintained user interface display screens and Internet appliance received reduced keyset keystroke sequences. A method for climbing includes the steps of moving a flip ladder between a straight configuration and a stepladder configuration. Structure is arranged for creating, for each of the first plate interspaces, an inlet opening for the first medium from the space into the first plate interspaces and an outlet opening for the first medium from the first plate interspaces to the space.