For nearly half a century, Professor M. A. K. Halliday has been enriching the discipline of linguistics with his keen insights into the social semiotic phenomenon we call language. This ten-volume series presents the seminal works of Professor Halliday. Throughout his career Professor Halliday has continued to address the issue of the application of linguistic scholarship to Computational anduantitative Studies. The sixth volume in the collected works of ProfessorM. A. K. Halliday includes works that span the last five decades, covering developments in machine translation and corpus linguistics. Also included is discussion of recent collaborative efforts bringing together those working in systemic functional grammar, fuzzy logic and "intelligent computing", engaging in what Halliday refers to as computing with meaning. The principles and methods outlined in these papers remain as relevant today as when they were first published, continuing to point the way forward in an endeavour where success depends more on advancing our knowledge of language than machines.