[gmx-users] the difference between fixing and freezing and position restraint

[Banafsheh Mehrazma]

Hi everyone;

I wonder what's the difference between fixing and freezing and
position restraining?
I know how to position restrain, but I don't have any idea how we can
fix or freeze.
So I would be glad if you tell me exactly, how we can fix the solute
while the solvent is not, and vice versa. :)

Thank you in advance
B.Mehrazma