Printing the near-|FCI| wave function ===================================== Once obtained the near-|FCI| energy, one can also take a closer look at the wave function stored in the |EZFIO| database. If the wave function contains less than :math:`10^4` determinants, you can directly read it with the :ref:`qp_edit` command. Just run .. code:: qp_edit file.ezfio .. important:: The :ref:`qp_edit` mode virtually makes human-friendly the architecture of the |EZFIO| database through the use of a the text editor defined by the :envvar:`EDITOR` environment variable. Then, look for the word *hand* when you are in the :ref:`qp_edit` mode. If the research is negative, then it means that the wave function stored in the |EZFIO| database is too large to be edited interactively in :ref:`qp_edit` mode. An alternative is to use the :command:`print_wf` command: .. code:: qp_run print_wf file.ezfio | tee file.ezfio.fci_natorb.wf This program will, by default, print out the first :math:`10^4` determinants whatever the size of the wave function stored in the |EZFIO| directory. If you want to change the number of printed Slater determinants, just change the :option:`determinants n_det_print_wf` keyword using the :ref:`qp_edit` tool. .. seealso:: The documentation of the :ref:`print_wf` program.