Plain Language is the use of straightforward communication without "legalese" and long, run-on sentences.
In Louisiana, we try to write our administrative law in a way that the general public can understand and follow. See federal guidelines.
When writing your document, use a readability analyzer to check paragraphs that seem wordy or difficult to read. Omit any codification prior to putting your text through an analyzer. Aim for a readability score no higher than a high school reading level.
Try to use everyday words and short sentences. If you must use technical terms, define the terms using plain language.