Some general characteristics of the MK Process are:
The only satisfactory ways of defining the MK Process are (a) by examples of its use; (b) by isolated statements concerning aspects of its nature; and (c) by developing sequences of questions [not answers!] that are capable of transporting the observer into a mental climate that is, identically, the only complete form of the MK Process itself.
Among the isolated statements that can be made is the following:
The MK Process is a procedure, a methodology, an operator, that makes possible the arrangement (classification) of stellar spectra into prepared structures that are defined by the spectra of arrays of individual standard stars.