# Example for: alignment.expand()

# This will add models to the alignment.

env = environ()
aln = alignment(env, file='toxin.ali', align_codes=('2ctx', '2abx'))
aln.expand(expand_control=(9999, 9999, 1, 3, 0),
           root_name='2abx', file_id='.B', file_ext = '')
aln.write(file='toxin-expand.ali')