I am working on a data modeling project involving an SEC rule and am struggling to deduce the proper vocabulary when referring to the various outline levels of the document. For example, at the top of page 532 of the rule is Item 1 of schedule AL. Beneath Item 1 is (a)(1) and (a)(2), which I am able to deduce are referred to as "paragraphs". My question, however, is what is the name of (a)?
E.g. if I wanted to say "in Item 1, [______] a, there are two paragraphs, 1 and 2. What word would take the place of the blank?