Dear all, There is a problem with \useMPlibrary[txt] at compilation time (ConTeXt ver: 2012.09.11 20:36 MKIV): metapost > loaded: library 'txt' (/opt/context-minimals/texmf-context/tex/context/base/meta-imp-txt.mkiv ! Undefined control sequence. system > tex > error on line 149 in file /opt/context-minimals/texmf-context/tex/context/base/meta-imp-txt.mkiv: Undefined control sequence ... 139 \ht\scratchbox\parheight 140 \dp\scratchbox\zeropoint 141 \box\scratchbox 142 \getshapecharacteristics 143 \egroup} 144 145 \def\setupshapetexts% 146 {\dodoubleempty\getparameters[\??sh]} 147 148 \setupshapetexts% 149 >> [\c!bodyfont=] 150 151 %%%%%%% rotfont nog definieren 152 153 \doifundefined{RotFont}{\definefont[RotFont][RegularBold]} 154 155 \def\processfollowingtoken#1% strut toegevoegd 156 {\appendtoks#1\to\MPtoks 157 \setbox\MPbox=\hbox{\RotFont\setstrut\strut\the\MPtoks}% 158 \startMPdrawing 159 n := n + 1 ; len[n] := \the\wd\MPbox ; <argument> \??sh \setsomevalue #1#2->\expandafter \def \csname #1 #2\endcsname \syst_helpers_get_parameters_assign_indeed ...{#2} {#3} \syst_helpers_process_comma_item ...mpty \_e_o_p_ \doubleexpandafter \syst_h... \syst_helpers_get_parameters ...ss_comma_item #1,] ,\_e_o_p_ l.149 [\c!bodyfont=] The fact is I don’t realy know what it is for, I took it from the wiki (http://wiki.contextgarden.net/User-Defined_Enumerations). Maybe it is not compatible with Mkiv? Best regards