One or more dialog boxes appear when you import a file. Arbortext IsoDraw performs an automatic check to determine whether the file contains 3D elements and, if so, it opens in 3D mode so that you can specify how the elements are to be transformed. An IGES file can contain several drawings (Entity 404). These are generally the actual elements to be converted and the drawing frame with a text field, which is stored separately from the drawing itself. You can prevent unwanted data from being imported by making the appropriate selections.