A Learning Support on the Use of a Comma after an Introductory Word or Phrase

Here is a learning support on the use of a comma after an introductory word or phrase. This is the third of fifteen learning supports on using the comma forthcoming on this blog. (You can find an excursus on this choice of publishing practice here.)

If you find typos in this document, I would appreciate a notification. And, as always, if you find this material useful in your practice, I would be grateful to hear what you think of it. I seek your peer review.