Opening a File The Open window opens automatically when you start the CDA Viewer application. The input file you select will appear in the CDA Viewer window, and the Open window will disappear. To display a new file, click on the Open... item in the File menu. The current file display will close automatically when you click on the OK button in the Open window. In the Open window, do the following: 1. In the Directories list box, click on the name of the directory that contains the file you want to view. 2. In the File Format list box, click on the format name (also called the keyword) that applies to the input file. Or, you can type a format name in the File Format entry box. If you select an input format other than DDIF , you must enter a format for which an input converter exists. 3. (Optional) Click on the Options File... button to open the Options File window. Specify the name of a file containing processing options to apply to your input file while it is processed for display. 4. (Optional) Click on the Display Options... button to open the Display Options window. Specify a paper size to be used to display your input file. 5. In the Files list box, double click on the name of the file; or click on the file name and then click on the OK button. By default, only DDIF files are displayed unless you select a different input format. 6. In the Open File entry box, you can type the name of the input file instead of selecting it from the Files list box. 7. In the File Filter entry box, you can change the list of file names displayed by typing a new Filter specification and clicking on the Filter button. 8. Click on the OK button to complete selection of the input file name and format, or click on the Cancel button to close the Open window and go to the CDA Viewer window. For information related to opening files, double click on an item from the list of additional topics below. Additional topics: * OK Button in the Open Window * Filter Button in the Open Window * Cancel Button in the Open Window * Help Button in the Open Window * Overview of the CDA Viewer * Using the CDA Viewer Window * File Menu * Help Menu * Selecting an Options File * Selecting Display Options * Moving Within a File * Creating an Options File * Closing a File * Quitting from the CDA Viewer