The items in the File menu allow opening of data files from disk, printer setup, and printing. In the case of an operation that will overwrite an existing file, you will be prompted by an alert that allows you to abort the write if you don't want the file to be overwritten. New Data File . This displays a File Selection Box to select a file to read. There is no error checking to see if the input file is valid.
Invalid files tend to cause a segmentation fault.
Save PostScript . This displays a File Selection Box prompting for the name of the file where you want to write the PostScript output. Printer Setup . This pops up a window with options to change the 'lp' command, the size of plot to be printed, whether to print landscape or portrait, and color vs. black and white. Save PNG .