The Semantic Web Applied Ontology (SWAO) Special Interest Group is embarking on a project to develop ontology articulation guidelines. There are different kinds of ontology for different purpose, such as concrete solutions to specific engineering problems and models for conceptualization. We will articulate the distinctions among various purposes, with different guidelines for different purposes. The intent of this project is to create a guide that will be easy enough to use, but still provide a greater measure of ontological analysis. The guidelines will be expressed as a collection of wiki pages on wiki.iaoa.org and will build on the terminology on this wiki.