NAME
     Group - define molecule groups

SYNOPSIS
     Group expr

DESCRIPTION
     Define groups with the currently selected molecules.
     The argument gives the number of members of each
     group. The default value is all selected molecules.
     If a smaller number is given, multiple groups with
     the desired number of molecules each are defined.
     E. g. the value 2 will make a group with the first
     and second selected molecule, another one with the
     third and fourth, etc.

     Defining groups changes the behaviour of a number
     of commands, mostly the ones for calculation. They
     will treat the molecules in a group as if they were
     only one molecule. This is commonly used when dealing
     with complexes, so that e. g. CalcSurface will
     calculate the surface of the whole complex, and not
     of each molecule individually.

     The help page of every command that deals with groups
     has the remark "this command supports groups" at the
     bottom.

EXAMPLE
     Group 2

SEE ALSO
     SelectMol

DATE
     960317
