## model.reorder_atoms() — standardize order of MODEL atoms

`reorder_atoms()`

Requirements:
  topology library

> This routine reorders atoms within the residues of MODEL so that they follow the order in the current residue topology library.

Example: examples/commands/reorder_atoms.py

      # Example for: model.reorder_atoms()

      # This will standardize the order of atoms in the model.

      from modeller import *

      env = environ()
      env.io.atom_files_directory = ['../atom_files']

      # Order the atoms according to a topology library:
      env.libs.topology.read(file='$(LIB)/top_heav.lib')

      mdl = model(env, file='1fas')
      mdl.reorder_atoms()
      mdl.write(file='1fas.ini1')