Hi Abraham,
Beam.length-fraction - thanks for uncovering this information for us. I was never able to find this. It's really useful. So it seems like setting the fraction to 1 gives the 'normal' distance, setting to 0 gives no distance, and setting to 0.5 gives half the normal distance, and so on. I have to say that even upon finding this in the doc, the brief explanation is not at all illuminating. I think it needs better expressing - how does one go about submitting documentation improvement requests?
Andrew