Configuration files are used to store the information contained in the fields of the GUI screens for use in future sessions. The following buttons, which appear at the bottom of the screen, permit usage of these files.

• Open: Fill the fields in the GUI pages with a set of parameters previously stored in a configuration file. This assumes that you have previously saved a set of parameters in the current directory.

• Save: Save the current set of parameters in the current configuration file. If you have not previously saved a file from within your current SnB session, you will be prompted for a file name.

• Save As: This button will prompt the user for the name of a file (default: prefix.config) in which to store the current set of parameters.

• Clear: Pressing this button will reset all fields to their default values, just as if you had restarted the program and had not yet loaded a configuration file.