PGASetIntegerInitPermute(3) on Linux
The text d10ef493f4f9, as Debian 1.1 (Buzz) shipped it.
sets a flag to tell the initialization routines to set each integer-valued gene to a random permutation of the values given by an upper and lower bound. The length of the interval must be the same as the string length. This is the default strategy for initializing integer-valued strings. The default interval is [0,L-1] where L is the string length. No string initialization is done by this call.