# Calculations

> `CalcSecondary` | calculate secondary structure
> `CalcRmsd` | calculate RMSDs and displacements
> `CalcMatch` | calculate best matching structure parts
> `CalcCluster` | reduce number of structures
> `CalcSurface` | calculate solvent accessible surface
> `CalcPot` | calculate electrostatic potential
> `CalcShift` | calculate ring current shifts
> `CalcAtom` | calculate missing atom coordinates
> `CalcBond` | calculate bonds between close atoms
> `CalcHbond` | find H-bonds
> `CalcVdw` | find Van der Waals violations
> `CalcDist` | find short distances between atoms
> `CalcAngle` | calculate angular order parameters
> `CalcHelix` | calculate angles between helix axes
> `CalcAxis` | calculate lengths of principal axes
> `CheckBond` | check number of bonds
> `CheckUpl` | check upper limits
> `CheckLol` | check lower limits
> `CheckAco` | check angle constraints

Last modified: Mon Jan 20 19:44:58 CST 2003