This volume showcases previously unpublished research on theoretical, descriptive, and methodological innovations for understanding language patterns grounded in a Systemic Functional Linguistic perspective. Featuring contributions from an international range of scholars, the book demonstrates how advances in SFL have developed to reflect the breadth of variation in language and how descriptive methodologies for language have evolved in turn. Taken together, the volume offers a comprehensive account of Systemic Functional Language description, providing a foundation for practice and further research for students and scholars in descriptive linguistics, SFL, and theoretical linguistics.