Random Map Creator � "Set ruggedness"

[J Henry Waugh]

In the game tools, options for random map creation include partsea, partmountain, partruggedness and partriver.

But the CLI breakdown (according to ./Dominions3 --help) lists sea, mountains, forests, farms, waste, and swamp.

******* Random Map Options *******
--makemap XXX Generate a random map with filename XXX and exit
--riverpart X 100 = normal amount of rivers, 0=no rivers
--seapart X Percent of map that is below water level (default=30)
--mountpart X Percent of map that is mountains (default=20)
--forestpart X Percent of lands that are forests (default=20)
--farmpart X Percent of lands that are farm lands (default=15)
--wastepart X Percent of lands that are wastes (default=10)

How is "ruggedness" defined?

Is farmland not in "ruggedness"?

Or is there some additional "randomizing" breakdown that transforms values in the Game Tools UI?