begin options
{% if fixed_cell%}  fixed_cell
{% endif %}
{%- if auxiliary is defined %}  auxiliary{% for aux in auxiliary %} {{aux}}{% endfor %}
{% endif %}
{%- if auxmultname is defined %}  auxmultname {{auxmultname}}
{% endif %}
{%- if boundnames is defined %}  boundnames
{% endif %}
{%- if print_input is defined %}  print_input
{% endif %}
{%- if print_flows is defined %}  print_flows
{% endif %}
{%- if save_flows is defined %}  save_flows
{% endif %}
{%- if ts_filerecord is defined %}  ts6 filein {{ts6_filename}}
{% endif %}
{%- if obs_filerecord is defined %}  obs6 filein {{obs6_filename}}
{% endif -%}
end options

begin dimensions
  maxbound {{maxbound}}
end dimensions

{% for i, path in periods.items() %}begin period {{i}}
  open/close {{path}}{% if binary %} (binary){% endif %}
end period
{% endfor %}