::::Why, other sections are longer (and it already has one sub-section).  Bear in mind that one of the first things to be criticised when you go GA, A-class or FA status is short stubby-sections.  As Woody ahs said, this article is at FA so we need to be careful that any changes do not degrade the quality of the article.  See Help:Section, on "softer" subjects it's recommended that sections generally be longer, we are not giving many technical definitions which naturally need to be separated, the various headers you came up with were rather limiting, in that they could never be expanded, which tends to suggest that they were over-specific.