Subject: AMBER: Are Parm constraints rigid?

From: <[email-masked]>
Date: Wed, 19 Oct 94 11:28 CDT

Dear CCLers,

I would like to know if the constraints that may be applied to internal
variables using the CONS option in Parm are indeed a rigid constraint 
(similar to SHAKE) or if these are actually "restraints".

As a side note to this, if these are rigid constraints, why must I include
the force constants in the input section?

Thank you,

Anthony K. Grafton
Dept. of Chemistry and Biochemistry
University of Oklahoma