begin options
{%- if digits is defined -%}  digits {{digits}}{%- endif -%}
{%- if print_input is defined -%}  print_input{%- endif -%}
end options

begin continuous
  {{obsname}} {{obstype}} {{id}} {%- if id2 is defined -%}{{id2}}{%- endif -%}
  {{obsname}} {{obstype}} {{id}} {%- if id2 is defined -%}{{id2}}{%- endif -%}
  ...
end continuous
