Mr. Murphy, we tend to put definitions in section 2 only if the term being defined appears in several places in the code. I must say that the structure isn't perfect and the form isn't always followed. Generally, section 2 should be reserved for those terms that are going to appear in several different places in the code. Sometimes a definition appears in only one part and the term is only used in that part.
Because we're crafting this definition only for the purpose of this particular offence, it simply makes the most sense and it's probably the most user friendly if the definition actually appears in the section itself.