1. A method of processing a print job in a document production environment, comprising: receiving a job ticket for a print job, wherein the job ticket comprises one or more job ticket parameters for processing the print job; identifying a process plan template comprising one or more processing instructions for processing the print job; performing a parameter value resolving process for each job ticket parameter by: identifying, from a plurality of sources, a plurality of candidate values for the job ticket parameter, identifying the source associated with each of the candidate values, and determining whether one of the candidate values has a source with precedence over the sources for the other candidate values, and if so, selecting the candidate value whose source has precedence as a resolved parameter value; presenting a user with a representation of a set of the resolved parameter values, and permitting the user to modify at least one of the resolved parameter values to yield a user-modified parameter value; and processing a first portion of the print job using the identified process plan template, at least one of the resolved parameter values, and any user-modified parameter values.