1. A method for serving an operator of a machine tool comprising a control system equipped for communicating over a network with a host system, the method comprising the steps of: receiving an identifying code from the control system; transmitting a set of content options based on the identifying code; receiving a request for content that identifies a content option among the set of content options from the control system; identifying a price for the requested content; delivering, by the host system, the requested content, the requested content comprising a list of data items to be captured, at least one trace event that defines when a trace for data associated with a data item of the list of data items is invoked, and at least one trigger event that defines when the trace for the data is terminated; and charging the operator of the machine tool the identified price.