%Dpkg::Control::Fields::FIELDS
 +- Dpkg::Control::Fields::field_is_official($fname)
 |  Looks up $_[0].
 |   +- Dpkg::Control::Fields::field_is_allowed_in()
 |   +- Dpkg::Control::Fields::field_get_dep_type()
 +- Dpkg::Control::Fields::field_is_allowed_in($name, @types)
 |  Looks up $_[0].
 |   +- Dpkg::Control::Fields::field_transfer_single()
 |   +- Dpkg::Control::Fields::field_list_src_dep()
 |   +- Dpkg::Control::Fields::field_list_pkg_dep()
 +- Dpkg::Control::Fields::field_list_src_dep()
 |  Returns a sublist of keys in %Dpkg::Control::Fields::FIELDS.
 |   +- %Dpkg::Control::Fields::FIELD_ORDER
 +- Dpkg::Control::Fields::field_list_pkg_dep()
 |  Returns a sublist of keys in %Dpkg::Control::Fields::FIELDS.
 |   +- %Dpkg::Control::Fields::FIELD_ORDER
 |   +- dpkg-gencontrol:245
 |      
 +- Dpkg::Control::Fields::field_get_dep_type($field)
 |  Looks up $_[0].
 |   +- dpkg-gencontrol:179
 |   +- dpkg-gencontrol:252
 |   +- dpkg-source
 +- Dpkg::Control::Fields::field_register($field, $allowed_types, %opts)
    Adds element to %Dpkg::Control::Fields::FIELDS with key $_[0].
     +- Dpkg::Control::Fields
field_transfer_*

%Dpkg::Control::Fields::FIELD_ORDER
 +- Dpkg::Control::Fields
 |  Adds elements to %Dpkg::Control::Fields::FIELD_ORDER
 +- Dpkg::Control::Fields::field_ordered_list($type)
 |  Returns a list of field names.
 |   +- Dpkg::Control::set_options(%opts)
 |      Passes return value to Dpkg::Control::Hash::set_output_order().
 +- Dpkg::Control::Fields::field_insert_after($type, $ref, @fields)
 |  Adds elements to %Dpkg::Control::Fields::FIELD_ORDER
 |   +- Dpkg::Control::Fields
 +- Dpkg::Control::Fields::field_insert_before($type, $ref, @fields)
    Adds elements to %Dpkg::Control::Fields::FIELD_ORDER
     +- Dpkg::Control::Fields

Dpkg::Control::Hash::set_output_order(@fields)
Sets Dpkg::Control::Hash->{'out_order'}

Dpkg::Control::Hash->{'out_order'}
Used in Dpkg::Control::Hash::output($fh)

Dpkg::Control::Hash::output($fh)
Prints control fields.