How to... limit creature size?
In some experiments creatures tend to grow big but it doesn’t
lead to interesting results and stops the real improvements.
You can disable body modification (genetics)
You can use a penalty method in fitness function (applicable
to „standard.expdef” and similar experiments), change:
   return someformula;
   into:
   var f=someformula;
   if (this.strsiz>....) f=0;
   return f;
You can change the experiment definition to stop big
creatures from appearing, for example, check
Genotype.strsiz before calling createFromGenotype()