+=item C<default_part_id>
+
+An optional part id which is used as default value if no part is set
+in the time recording entry.
+
+=item C<default_partnumber>
+
+Like C<default_part_id> but given as partnumber, not as id.
+
+=item C<override_part_id>
+
+An optional part id which is used instead of a value set in the time
+recording entry.
+
+=item C<override_partnumber>
+
+Like C<overrride_part_id> but given as partnumber, not as id.
+
+=item C<related_order>
+
+An optional C<SL::DB::Order> object. If it exists then it is used to
+generate the delivery order from that via C<new_from>.
+The generated items are created from a suitable item of the related
+order. If no suitable item is found, an exception is thrown.
+
+=item C<rounding>
+
+An optional boolean value. If truish, then the durations of the time entries
+are rounded up to the full quarters of an hour.
+