For some reason the twocolumn command does not work with my own created style. The example in the documentation work very well with the default style, but unfortunatly not with my own style. I recive the following error: Undefined control sequence \expandafter \XC@getc@l@r \pd@color \XC@@ I created my style from the simple style and mixed it with some elements of the default style. Can anybody tell me, which command in the style-template is needed to create two columns? My own style looks like: \NeedsTeXFormat{LaTeX2e}[1995/12/01] \ProvidesPackage{powerdot-HFT}[2007/09/10 v1.0] \RequirePackage{pifont} \RequirePackage{amssymb} \RequirePackage{pst-blur}% \definecolor{HFTrot}{rgb}{.6,0,.01} \newbox\pd@imageboxtitel \newbox\pd@imageboxslide \sbox\pd@imageboxtitel{\includegraphics[trim=0 0 0 0,clip, width=.175\slidewidth,height=.175\slideheight]{TU-Logo.eps}} \sbox\pd@imageboxslide{\includegraphics[trim=0 0 0 0,clip, width=.065\slidewidth,height=.065\slideheight]{TU-Logo.eps}}% \pddefinetemplate{basic}{ titlepos={.05\slidewidth,.89\slideheight}, titlewidth=.875\slidewidth,textheight=.66\slideheight, titlefont=\large\bfseries\raggedright, clockpos={.99\slidewidth,\slideheight}, textpos={.05\slidewidth,.825\slideheight}, textwidth=.9\slidewidth%, }{}% \pddefinetemplate[basic]{titleslide}{ texthook=t,textpos={.5\slidewidth,.825\slideheight}, textwidth=.9\slidewidth,textfont=\centering, textheight=.6\slideheight, titlefont=\Large\bfseries\centering,tocpos,ntocpos,stocpos }{% \rput[tr](.515\slidewidth, .375\slideheight){\usebox\pd@imageboxtitel} \rput[tl](.515\slidewidth, .355\slideheight){\parbox{.15\slidewidth}{\scriptsize\textsl{TECHNISCHE\\ UNIVERSIT"{A}T\\ BERLIN}}} \rput[tm](.5\slidewidth, .15\slideheight){\footnotesize\textbf{{Fachgebiet Hochfrequenztechnik}}} \psset{linewidth=.0075\slideheight, linecolor=HFTrot, shadow=false, shadowcolor=black!35, blur=true}% \psline(.04\slidewidth, .065\slideheight)(.96\slidewidth, .065\slideheight)% }% \pddefinetemplate[basic]{slide}{ lfpos={.105\slidewidth, .03\slideheight}, rfpos={.96\slidewidth, .03\slideheight}% }{% \rput[tl](.025\slidewidth, .09\slideheight){\usebox\pd@imageboxslide} \psset{linewidth=.0075\slideheight, linecolor=HFTrot, shadow=false, shadowcolor=black!35, blur=true}% \psline(.105\slidewidth, .07\slideheight)(.96\slidewidth, .07\slideheight)% }% \pddefinetemplate[slide]{sectionslide}{ titlehook=c,titlefont=\Large\bfseries\centering, titlepos={.5\slidewidth,.55\slideheight}, titlewidth=.75\slidewidth, }{}% \setkeys[pd]{section}{sectemp=sectionslide,widesectemp=sectionwideslide} \def\pd@tochighlight#1{\pd@tocsimple\phantom{#1}} \def\pd@tochighlight#1{\pd@tocsimple\@firstofone{#1}} \def\pd@tocsimple#1#2{% \@tempdima\pd@@tocwidth \settowidth\@tempdimb{\normalsize\ensuremath\triangleright\hskip1mm}% \advance\@tempdima-\@tempdimb \ifnum\pd@toctype=\@ne\else #1{\normalsize\ensuremath\triangleright\hskip1mm}% \fi \begin{minipage}[b]\@tempdima \pd@usedtocfont#2% \end{minipage}% \ifnum\pd@toctype=\@ne #1{\hskip1mm\normalsize\ensuremath\triangleleft}% \fi } \def\pd@tochighlight#1{% \begin{minipage}[b]\pd@@tocwidth \pd@usedtocfont\color\pd@@tochltcolor#1% \end{minipage}% } \setkeys[pd]{section}{sectemp=sectionslide,widesectemp=sectionwideslide} \pdifsetup{landscape}{\def\pd@tocslide#1{{\tiny\ensuremath\bullet} #1}}{} \def\labelitemi{\small\ensuremath\bullet} \def\labelitemii{\small\ensuremath\circ} \def\labelitemiii{\scriptsize\ensuremath\bullet} \def\labelitemiv{\scriptsize\ensuremath\circ} \pdsetup{ list={labelsep=1em,leftmargin=*,itemsep=0pt,topsep=5pt,parsep=0pt} } \def\rmdefault{cmss} \endinput Greets Patrick _________________________________________________________________ Explore the seven wonders of the world http://search.msn.com/results.aspx?q=7+wonders+world&mkt=en-US&form=QBRE