Buffered/unbuffered I/O issues

[Salvatore Filippone]

Hello,
I have a further question on the GFORTRAN_UNBUFFERED_PRECONNECTED
environment variable: when is it enforced? 
To be specific, consider a situation where I want to change it with
setenv from:
1. A Fortran code
2. A C main program about to call a Fortran subroutine
What would happen?

Thanks 	a lot
Salvatore