NewChannel creates a new channel.

NewFeed creates a new RSS feed.

NewImage specifies a GIF, JPEG or PNG image that can be displayed with the channel.

NewItemWithDescription creates an item which represents a "story" -- much like a story in a newspaper or magazine; if so its description is a synopsis of the story, and the link points to the full story.

NewItemWithTitle creates an item which represents a "story" -- much like a story in a newspaper or magazine; if so its description is a synopsis of the story, and the link points to the full story.