1. A method for creating and displaying annotations, comprising: (1) projecting a selecting object onto a three-dimensional model, the selecting object being input by a user while viewing a first image corresponding to a portion of the three-dimensional model; (2) determining a location corresponding to the projection on the three-dimensional model; (3) associating the location with content entered by the user while viewing the first image; (4) storing the content with the location to form an annotation; and (5) displaying the annotation with a second image corresponding to the location.