class Comment # A single comment on a Page. Associated with a user and Thread.
class CommentTree # Data structure representing a thread of comments on a page.
class User # A user on a Site. Typically has a username.
class Page # A page on a Site.
class Site # A social media website.
WriteComment(Comment, Page) # Posts a comment to a Page.
ParseComments(Page) [CommentTree] # Reads all comments from a page and parses into a list of CommentTrees.
LinkCommentTrees(CommentTree, CommentTree)