Hi Wolfgang, some deep error appeared, unfortunately. I tested it on TL2014--17. Did you use TL2018? It seems similarly as any other error related with the change of dimensions maintanance betweeen TL2017 and 2018. Tomáš tex error > tex error on line 8 in file x.tex: ! Missing number, treated as zero <to be read again> s <argument> s amepage--1 \addaskedblankskip ..._vspacing_temp #1\dimexpr #2 \relax l.8 } \spac_vspacing_yes_indeed ...ar \clf_vspacing {#1} \fi \strc_sectioning_handle_page_yes ...entheadlevel ] \fi \headparameter \c!befo... ... l.15 \levelA{A1} 1 2 \definehead [specialpage] [chapter] 3 \definehead [levelA] [chapter] 4 5 \setuphead 6 [specialpage] 7 [incrementnumber=list, 8 >> header=empty 9 ] 10 Wed, Apr 18, 2018 ve 06:00:27PM +0200 Wolfgang Schuster napsal(a): # [1]Tomas Hala # 11. April 2018 um 19:36 # Hello, # # I have got a document with e.g. six chapters, numbers are from 1 to 6. # At special places I would like put a special page containing a special # title. # The special page should be without a header and without any number, # the title should be put into the contents by the same way as other # chapters.. # # I came across two problems: # # First, in the minimal example below I get chapter numbers 1, 2, 4, 5, 7, # 8 # and if I use incrementnumber=no, the "specialpage" is not stored in the # contents. # # Secondly, I do know how to switch off the header only at this special # page. # # I also tried \definehead[specialpage][title] but in this case the # "specialpage" is not stored in the # contents, too. # # Like this? # # \definehead [specialpage] [chapter] # \definehead [levelA] [chapter] # # \setuphead # [specialpage] # [incrementnumber=list, # header=empty] # # \starttext # # \placelist[levelA,specialpage] # # \levelA{A1} # \levelA{A2} # \specialpage{Special page 1} # \levelA{A3} # \levelA{A4} # \specialpage{Special page 2} # \levelA{A5} # \levelA{A6} # # \stoptext # # Wolfgang # # References # # Visible links # 1. mailto:tomas.hala@mendelu.cz # /usr/bin/xdg-open: řádek 402: htmlview: příkaz nenalezen # /usr/bin/xdg-open: řádek 402: firefox: příkaz nenalezen # /usr/bin/xdg-open: řádek 402: mozilla: příkaz nenalezen # /usr/bin/xdg-open: řádek 402: netscape: příkaz nenalezen # ___________________________________________________________________________________ # If your question is of interest to others as well, please add an entry to the Wiki! # # maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context # webpage : http://www.pragma-ade.nl / http://context.aanhet.net # archive : https://bitbucket.org/phg/context-mirror/commits/ # wiki : http://contextgarden.net # ___________________________________________________________________________________ Tomáš Hála -------------------------------------------------------------------- Mendelova univerzita, Provozně ekonomická fakulta, ústav informatiky Zemědělská 1, CZ-613 00 Brno, tel. +420 545 13 22 28 -------------------------------------------------------------------- http://akela.mendelu.cz/~thala