User blog comment:Purplatypus/Let's Figure out Capitalization!/@comment-24672610-20150213220655/@comment-26101005-20150213225655

Missyvecc's comment made me take a further look at the wiki. It does seem that there is a distinction between the interface tabs and what they actually represent. The Party page uses the lowercase version almost entirely, except when it clearly says "the Party tab". So I guess when referring to the interface, Inventory should be capitalized, and should be lowercase in all other uses.