Set the starting value of the random number generator. This is used
in conjunction with non-deterministic collage grammars with
probalitities to get reproduceable results.
If this option is not set or set to 0 then the starting value of the random
number generator is obtained "by random". The minimum value is
-2.147.483.648 and the maximum is 2.147.483.647.
/r 53691969
Set the random generator start value to 53691969.