NAME
     AddAtom - add new atom

SYNOPSIS
     AddAtom name name1 name2 name3 expr expr expr

DESCRIPTION
     Add an atom with the name given as first argument to
     all selected residues.

     name1 is the name of the atom where the new atom is
     attached. name2 is the name of the atom that is used
     to define the axis of the dihedral angle together
     with the atom name1. name3 is the name of the atom
     relative to which the dihedral angle is given.

     The first numeric argument gives the dihedral angle,
     the next one the angle between the axis of the
     dihedral angle and the bond between atom name1 and
     the new atom. The last argument gives the bond
     distance.

     If name1, name2 and name3 do not exist in a selected
     residue, or if name already exists, then no new atom
     is added for this residue, without an error message.

     A bond between the new atom and atom name1 is
     automatically added.

EXAMPLE
     AddAtom "HB2" "CB" "CA" "HB1" 120 120 1.5

SEE ALSO
     SelectRes, AddPseudo, RemoveAtom, WriteLib

DATE
     961206
