What do the "Parent", "Top" and "Reply" links under comments mean?

When you are viewing comments, you will often notice the words "Parent", "Top" and "Reply" underneath them.

Parent: If you see "Parent" then the comment you are reading is a reply to a previous comment. Clicking "Parent" will let you see that particular comment.

Top: If you see "Top" then this means the comment you are replying to is a part of a larger discussion, clicking this will take you to the very start of the discussion thread or comment listing.

Reply: Every comment has a "Reply" link underneath. By clicking there, you will be able to answer the specific comment made.