of a process model, but only to the way this content is organized and represented. It does suggest ways of organizing different structures of the process model while the content is kept intact but the pragmatic issue of what must be included in the model is still left out. The second limitation relates to the prioritizing guideline the derived ranking has a small empirical basis as it relies on the involvement of 21 process modelers only. This could be seen on the one hand as a need for a wider involvement of process modelers' experience, but it also raises the question, what alternative approaches may be available to arrive at a prioritizing guideline? See also Model selection Process (science) Process architecture Process calculus Process flow diagram Process ontology Process Specification Language References External links Modeling processes regarding workflow patterns; link appears to be broken American Productivity and Quality Center (APQC), a worldwide organization for process and performance improvement The Application of Petri Nets to Workflow Management, W.M.P. van der Aalst, 1998. Business process management Systems engineering Process theory