When developing an outline if each heading is divided into two or more parts your are using?

This outline technique is summarizing a lecture, speech or interview using main ideas as main points (Roman numerals, letters, numbers, dashes or bullet points) and subcaregotizing details underneath the main points using a different denomination.

Common form:

I. First Main Idea

A. Subcategory 1

1. Point/example 1

2. Point/example 2

B Subcategory 2

1. Point/exaple 1

2. etc.

II. Second Main Idea

A. etc...