\begingroup
\setlength{\hsize}{\dimexpr\l_kivi_tab_desc_dim+\l_kivi_tab_desc_leftskip_dim}
\setlength{\leftskip}{\l_kivi_tab_desc_leftskip_dim}
+ \usekomafont{extraDescription}
\seq_use:Nn \g_kivi_extraDescription_seq {\\}
\par\nointerlineskip
\endgroup
\renewcommand*{\raggedsignature}{\raggedright}
+\newkomafont{extraDescription}{}
+
\endinput