Beginning in iWork '08, word processing and page layout are two distinct modes. In word processing mode, Pages supports headers and footers, footnotes, and outline and list creation. Users can collaborate with others on a document. Pages tracks changes by users by displaying each person's edits in different colors. Users can also add comments alongside the document. In page layout mode, users have complete control over the position of objects on the page. Images and text can be placed anywhere on the canvas.