I apologise for being a computer nerd - I'm actually quite a nice normal person ! However, I did do some work on SWORD at BA for a few years. It was determined that it was more fuel efficient for an a/c to fly at an angle of 3 or 4 degrees up from the vertical. Not really answered the question but apparently it did make considerable fuel savings. Kept a few programmers in employment for a year or two.
And no, I did not design or write the SWORD software. I just had to support it day and night. My pilot friends tell me the acronym stands for Sure Way Of Running Dry. Old joke I suspect.