This chapter overviews the history of the DocuScope project. In its inception, we sought a production theory underlying rhetorical composition and decision-making. Our pursuit of a theory led to the development of large-scale dictionaries of language patterns we have curated for over two decades. The major conceptual continua that have guided our curation efforts and major taxonomies are discussed, including the four types of polysemy we have had to address to ensure our dictionary patterns are as ambiguity-free as possible. We conclude by reviewing our recent efforts to apply the dictionaries for writing education on small textual samples, including single texts.