An appliance communicates via a communication network via various communication services available for transmitting data via the communication network. The printhead assembly comprises a channel extending substantially across the pagewidth, the channel having a base and a pair of opposed resilient sidewalls extending therefrom, and an array of printhead modules arranged end to end in the channel so as to extend substantially across the pagewidth. The system optionally includes a sensor to sense a parameter indicative of a need, a telemetry module to receive an external command, or a programmable device, for regulating gene expression of the open reading frame. Advantageously, the trace file is formatted using a standard markup language format, such as HTML.