Thank you, Wolfgang! That is very helpful and much appreciated.

Re \switchtobodyfont, I see that I misinterpreted the entry on the wiki. 

All best,
Alan

On Apr 10, 2025 at 14:06:16, Wolfgang Schuster <wolfgang.schuster.lists@gmail.com> wrote:
Am 10.04.2025 um 18:28 schrieb Alan Bowen:
Oops. I forgot the macro definition:

\def\modCyr#1{{\switchtobodyfont[dejavu]{#1}}}

To get your text in dejavu add

    \usebodyfont  [dejavu]
    \setupbodyfont[modern]

at the begin of the document to preload the typescript, otherwise you
load the font in a local group where the settings are forgotten at the
end of the group.


Be also be aware of \switchtobodyfont being an argumentless switch, this
means the form

    \switchtobodyfont[<font>]{...}

is wrong and the correct form is

    {\switchtobodyfont[<font>]...}

Wolfgang

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