environment configuration file environment.cfg The default environment configuration file. The default environment provides a digital organism with new, random input strings every time an 'input-output' instruction code ('IO' for the transsmt instruction set) is executed. The genome of a digital organism can harbor one or several input-output instructions that can be executed either only once or many times during the time it takes to generate an offspring. This means that the organism can take input numbers from the environment more than once before replicating and can compute the result of more than one logic operation.