Thanks Wolfgang.

> calm down.

Done.

I've let some steam off earlier on.    OoOo<:O)

>\setuphead[chapter][style=\
>
> >myHeadingsFont\myChapterFont]
> >
> >You have to load 'myHeadingsfont' typescript before you can use
> >them because they are not available on outer level, only fonts used
> >as bodyfont can be accesed without this selection.


That works indeed.

>I found the information to solve your problem in the fonts manual and
>you should read it if you need more information.

Oh, the number of times I read it. One more time a moment ago.

Sooo... the Da Fonti Code is hidden in there. In which section of the manual
did you find the clue ?


In my quest to further understand how this stuff works, I've been testing
the following...

\setuppapersize [A4][A4]

\starttypescript [serif] [mySerifFont]
    \definefontsynonym [mySerifFontRegular] [name:Times New Roman]
[features=default]
    \definefontsynonym [mySerifFontItalic] [name:Times New Roman Italic]
[features=default]
    \definefontsynonym [mySerifFontBold] [name:Times New Roman Bold]
[features=default]
    \definefontsynonym [mySerifFontBoldItalic] [name:Times New Roman Bold
Italic] [features=default]
\stoptypescript
\starttypescript [serif] [mySerifFont]
    \setups[font:fallback:serif]
    \definefontsynonym [Serif] [mySerifFontRegular]
    \definefontsynonym [SerifItalic] [mySerifFontItalic]
    \definefontsynonym [SerifBold] [mySerifFontBold]
    \definefontsynonym [SerifBoldItalic] [mySerifFontBoldItalic]
\stoptypescript
%\starttypescript [mySerifFont]
%    \definetypeface [mySerifFont] [rm] [serif] [mySerifFont] [default]
%\stoptypescript

\starttypescript [sans] [mySansFont]
    \definefontsynonym [mySansFontRegular] [name:Arial] [features=default]
    \definefontsynonym [mySansFontItalic] [name:Arial Italic]
[features=default]
    \definefontsynonym [mySansFontBold] [name:Arial Bold] [features=default]
    \definefontsynonym [mySansFontBoldItalic] [name:Arial Bold Italic]
[features=default]
\stoptypescript
\starttypescript [sans] [mySansFont]
    \setups[font:fallback:sans]
    \definefontsynonym [Sans] [mySansFontRegular]
    \definefontsynonym [SansItalic] [mySansFontItalic]
    \definefontsynonym [SansBold] [mySansFontBold]
    \definefontsynonym [SansBoldItalic] [mySansFontBoldItalic]
\stoptypescript
%\starttypescript [mySansFont]
%    \definetypeface [mySansFont] [ss] [sans] [mySansFont] [default]
%\stoptypescript

\starttypescript[myFonts]
    \definetypeface [mySerifFont] [rm] [serif] [mySerifFont] [default]
    \definetypeface [mySansFont] [ss] [sans] [mySansFont] [default]
\stoptypescript

\usetypescript[myFonts]

\setupbodyfont[mySerifFont,12pt]            % this displays the correct font
%\setupbodyfont[mySansFont,12pt]        % this displays the correct font

\definefont[myChapterFont][mySansFont sa 1.728]     % compile error at line
57 with (2) [and (1)]
%\definefont[myChapterFont][Arial sa 1.728]               % this works with
(1), compile error at line 57 with (2)
%\definefont[myChapterFont][Sans sa 1.728]               % defaults to LM
font with (1), compile error at line 57 with (2)

%\setuphead[chapter][style=\myChapterFont]                      % (1)
%\setuphead[chapter][style=\myFonts\myChapterFont]      % (2)
%\setuphead[chapter][style=\tfc\mySansFont]                     % (3) this
works

\starttext

\chapter{chapter test}      % line 57

\section{section test}

text test

\stoptext


Looking for further clues.

Alan

P.S. Resistance is futile Fontzi...I will assimilate you!