Creating an Options File You can create an options file prior to starting the CDA Viewer application. An options file is a text file with a default file extension of .CDA$OPTIONS. The options file contains all the processing options for your input file format. Processing options help ensure minimal format and content changes while the CDA Viewer processes your input file for display. An options file is not required. Default processing options are applied automatically when you open a file for display. However, you may require an options file if you need to use settings other than the default. Use the following guidelines to create an options file: - Begin each line of the options file with the keyword for the input format, followed by one or more spaces or tabs, or by a slash (/). - Specify only one processing option on each line. - Use uppercase and lowercase alphabetic characters, digits (0-9), dollar signs ($), and underscores (_) to specify the processing options. - Use one or more spaces or tabs to precede values specified for a processing option. For information related to creating an options file, double click on an item from the list of additional topics below. Additional topics: * DTIF_TO_DDIF Processing Options * Overview of the CDA Viewer * Selecting an Options File * Selecting Display Options