These changes do not affect the currently running world.
Worlds have thirteen properties.
Typically this is a small number, say three or four. Each agent trades a particular resource, and when it gets involved in a trading relationship with another agent, it uses this fraction to decide how much to give away. This number is multiplied by the population size to arrive at a number of interactions. After this many interactions are performed, the sites produce resources again and the other aspects of an Echo cycle are executed. Self replication involves making a copy of one's genome when enough resources have accrued in the reservoirs.