Explaining why I feel that the credit link to the 1.4.7 age creation guide is not appropriate.[]
The credit link at the top of this article points to a forum thread for a 1.4.7 version; that's very out of date. For that version, memory says that 0.10.1 was the functioning version.
Looking at that article, I see a few flaws. The question of mandatory or not mandatory did not apply to secondary symbols such as sun position. The biggest shock is that the biomes themselves were not even covered. All it says is: "Any "Biome" page, Biome Modifier (Pick One): ...". While it does list the biome controllers (not modifiers), it fails to mention the 3-biome minimum that most of them have.
Basically, the entire article is in need of a re-write; I do not feel that the credit link is worth keeping.