Hi, the space between columns is missing in the default direction. \unexpanded\def\page_mix_routine_package {\clf_mixfinalize \setbox\b_page_mix_collected\vbox \bgroup \ifvoid\b_page_mix_preceding \else % \page_postprocessors_linenumbers_deepbox\b_page_mix_preceding % already done \vpack\bgroup \box\b_page_mix_preceding \egroup \global\d_page_mix_preceding_height\zeropoint \nointerlineskip % no no: % \prevdepth\strutdepth \fi \hskip\d_page_mix_leftskip \page_mix_hbox to \d_page_mix_max_width \bgroup \edef\p_separator{\mixedcolumnsparameter\c!separator}% \mixedcolumnseparatorwidth\d_page_mix_distance % \mixedcolumnsparameter\c!rulethickness\relax \edef\p_direction{\mixedcolumnsparameter\c!direction}% \ifx\p_direction\v!reverse \dostepwiserecurse\c_page_mix_n_of_columns\plusone\minusone {\page_mix_routine_package_step \ifnum\recurselevel>\plusone \page_mix_routine_package_separate \fi}% \else \dorecurse\c_page_mix_n_of_columns {\page_mix_routine_package_step - \ifnum\recurselevel<\c_page_mix_n_of_columns + \ifnum\recurselevel>\c_page_mix_n_of_columns \page_mix_routine_package_separate \fi}% \fi \egroup \egroup} Wolfgang