Frames have the potential to confuse users by breaking the user's model of a website .
For instance, instead of the concept of a node as being a single unit of information, framed pages may consist of many units that can go in any direction, which may make it difficult to later go back to the original node. Proper and parsimonious use of frames may, however, be appropriate for websites if it promotes easier navigation. Drawbacks of using menu frames is that the amount of information placed in the menu page must be rather small in order for the entire menu to fit within the frame. That is, forcing the user to scroll to see the entire menu frame defeats the purpose of having one -which is to always have a visible menu. Frames might also be used to allow users to follow an external link while keeping the original, initial site in view.