The Milton Model (so named after Milton Erickson) is related to the NLP Meta Model. It was based specifically on Bandler and Grinder's modeling of Erickson's hypnotic language with clients. It is often mistakenly described as a mirror image of the Meta Model, using Meta Model violations in a positive way to produce therapeutic trance. While there is significant overlap in language forms, the Milton Model contains forms which do not appear in the Meta Model (various types of ambiguity, pacing and leading, tag questions, etc.), and vice versa.