Options File Button in the Open Window Clicking on the Options File... button opens 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. Additional topics: * Overview of the CDA Viewer * Using the CDA Viewer Window * File Menu * Open File Box in the Open Window * File Filter Box in the Open Window * Choosing the File Format in the Open Window * OK Button in the Open Window