Plain language is a term that has been in use for many years now but that has many interpretations depending on the user. Some think it means speaking to the weakest reader, calling it ‘dumbing down’. However, I believe this is a gross misconception of the term and practice.
PLAIN defines it as follows: “A communication is in plain language if its wording, structure, and design are so clear that the intended audience can easily find what they need, understand what they find, and use that information.”