>Experients from real world.
>
>XFRX#INIT fasters by 10% is more then 10 minutes speedy for report with cca 600 pages.

In real world, I've seen such reports. The longer it is, the more meaningless it becomes, and its results are less usable. One such report was about 200kg of paper. We actually printed only one third of it and then decided to wait until they noticed that two thirds were missing. They never did. Actually, their staff took only... about a quarter of what we printed, and never took the rest.

We sold the paper to recycling and had free coffee for two or three months, which was just about the only useful outcome. On top of teaching someone a palpable lesson about the size of the reports.