+=item C<man_days_tag $name, $object, %attributes>
+
+Creates two HTML inputs: a text input for entering a number and a drop
+down box for chosing the unit (either 'man days' or 'hours').
+
+C<$object> must be a L<Rose::DB::Object> instance using the
+L<SL::DB::Helper::AttrDuration> helper.
+
+C<$name> is supposed to be the name of the underlying column,
+e.g. C<time_estimation> for an instance of
+C<SL::DB::RequirementSpecItem>. If C<$name> has the form
+C<prefix.method> then the full C<$name> is used for the input's base
+names while the methods called on C<$object> are only the suffix. This
+makes it possible to write statements like e.g.
+
+ [% P.man_days_tag("requirement_spec_item.time_estimation", SELF.item) %]
+
+The attribute C<size> can be used to set the text input's size. It
+defaults to 5.
+