To open a data file, click on the Open button. The dialog box of figure 2.2 will appear. The data file must be an ASCII text file containing floating-point numbers in decimal or scientific notation, separated by newlines or some other whitespace. This representation is inefficient, but highly portable, and lends itself well to treatment by standard Unix utilities such as awk(3).
The file selection dialog is designed to mimic the Macintosh TM browser.
