Oh, someone is actually using it
To randomize a character just press F9, at least that works for me in Windows on a PC. You have to make it editable first ofcourse.
If you want to randomize some of the info and keep others static you have to know my oldschool 90-ties tricks with this homemade tool (its a 20 years old tool that may have some bugs and stupid implementations).
To make race static for example just edit the "hidden" field A3 with the race you want, for example Shay. Then just press F9 until you get what you want... To get it back to randomizing you have to type in "slump" the sweidhs word for random.
There are a couple of "hidden" fields for static features.