Board Thread:Wiki Discussion/@comment-27907368-20160529220645/@comment-27907368-20160530021646

Areas are named as follows: "RUINS/HOME," "Snowdin," "Waterfall," "Hotland," "CORE," and "NEW HOME."

RUINS is probably in all caps because it's the other name for the city "HOME." That one monster history book, I guess:

Honestly, looking to Sans for capitalization is complete trash: he says "snowdin," "core," "papyrus."

In a game where capitalization matters (LOVE and EXP), I think it's worthwhile to stick to what's in-game.