Dear Hans and Taco,

Thanks for the answers. I'll read "details.pdf" again...

I placed the pdf file of one unfinished chapter on www.ogbasel.ch/book.html (3.5 MB). Note that Fig. 3.12 happens to be the way I want it. Why this particular figure chose to behave I don't know, putting nothing after \placefigure[] and most options [left,right,inner etc.) don't make a difference.

The setuparea contains:

%Textfigures (on the inside up to 0.5/textwidth)
\setupfloat[figure][criterium=0.5\textwidth,default=inner]
\setupcaption[figure][style=\ssx]

I tried to add a second criterium (bigger than \textwidth), but not surprisingly my inventions and guesses weren't successful. Interventions within the text itself (\placefigure[....] and \setupfloat[figure][....]) also didn't work.

Lectures start this week, and I want to distribute some chapters as handouts in order to get feedback. This explains my bothering you with another question:

The subsection heads should be capitals. Setting textstyle=cap doesn't do anything. Setting style=cap gives an error (see end of message). style=slanted works, commands (\cap, \kap) don't work. \cap{some text} used in the text works.
This is how I'm setting up the heads:

\def\BookchapterCommand#1#2{\framed[frame=off,rightframe=on]{#1\space}\framed[frame=off]{\space#2}}
\setuphead[chapter][command=\BookchapterCommand,page=right]
\setuphead[subsection][style=cap (THIS IS WHERE I'M HAVING PROBLEMS),number=no]
\setuphead[subsubsection][style=slanted,number=no,after=\nowhitespace]

Thanks a lot, Jörg.

This is the error message when inserting style=cap:

) (./figures_book.tex) (./Mydefinitions.tex) (./book.tuo) (./book.tuo)
(./book.tuo) (./book.tuo) (./book.tuo) (./book.tuo) (./book.tuo) (./book.tuo)
(./book.tuo) (./book.tuo) (./book.tuo) (./book.tuo) (./book.tuo)
fonts          : using map file: cbgreek.map
fonts          : using map file: texnansi-public-lm.map
fonts          : using map file: original-public-vnr.map
fonts          : using map file: original-public-csr.map
fonts          : using map file: original-public-plr.map
fonts          : using map file: original-public-lm.map
fonts          : using map file: original-ams-euler.map
fonts          : using map file: original-ams-cmr.map
fonts          : using map file: texnansi-base.map
fonts          : using map file: t5-base.map
fonts          : using map file: qx-base.map
fonts          : using map file: 8r-base.map
fonts          : using map file: ec-base.map
fonts          : using map file: ec-public-lm.map
fonts          : using map file: original-base.map
systems        : begin file book at line 45
(./digestion/digestion_chapter.tex
chapter        : 1 Verdauung und Resorption
section        : 1.1 Vorbereitung in Mund und Magen
! Argument of \getvalue has an extra }.
<inserted text>
                \par
<to be read again>
                   }
\uppercased ...d \xdef \@@expanded {\uppercase {#1
                                                  }}}\@@expanded
\dodosmallcapped ...alize \cap@@uppercase {#1{#2}}
                                                  \egroup
\doplaceheadtext ... {\??ko #1}\c!style \getvalue
                                                  {\??ko #1\c!command } {} {...

\dodododosomekop ...mber ]{\finalsectionnumber }}}
                                                  \writesection {#1}{-}{#4}\...
l.5 \subsection {Der Speichel}
                             
?