There are only two positions that an Idea can have in an outline:
1. The point. An idea can be the point. In other words, it can go at the top of the outline.
2. A reason. The only other place an idea can go in an outline is as a reason. In other words, it is being used to justify the point as an indented element within the outline itself.
TK an illustration showing that the outline allows for the point and then everything else is just reasons.