bond interactions

[Alexander Afanasyev]

Hi All,

I’m using Espresso 3.3.1.

I am creating a polymer chain, using a harmonic bond (inter bondid harmonic K R 
[rcut]), where each bead has a different pid.

If I state an interaction (bond bondid) between bead 2 and 3  such as  "part 2 
bond  bondid 3"
Also, should I state "part 3 bond  bondid  2"?

Or these two commands are equivalent:
 part 2 bond bondid 3 
 part 3 bond bondid 2.

Regards,
Alex