# [NTG-context] Multiple layers question

Hans Hagen pragma at wxs.nl
Mon Jun 4 17:54:46 CEST 2012

```On 4-6-2012 15:41, Marco wrote:
> On 2012-06-04 Marcin Borkowski<mbork at wmi.amu.edu.pl>  wrote:
>
> Cześć Marcin,
>
>> Dnia 2012-06-04, pon o godzinie 14:33 +0200, Wolfgang Schuster pisze:
>>
>>> Load a font or move the \setlayer commands after \starttext.
>>
>> Thanks a lot!
>>
>> But why is that so?
>
> Until some years ago the latin modern font was always automatically
> considerable amount of time (check the stats at the end of a context
> run). This led to the question:
>
> “Why start loading a big, complex font like latin modern before we
> know which font the user actually wants to use and waste several
> seconds on it, just to start loading the users choice afterwards?”
>
>
> ”We delay loading the font until we know which font the user wants
> to use. If the user doesn't tell us, then we fall back to latin
> modern.”
>
> The body font is set up in the setup area (the part above
> \starttext). That, in turn, means that when having reached
> \starttext, the users choice of font is known and can be loaded. It
> is more efficient if a font other then latin modern is used.
>
> One drawback is that typeset text in the setup area has no font
> setup and will fall back to latin modern mono. Usually you don't
> typeset text in the setup area. However, layers are an exception and
> you need to set up the body font beforehand.

a good text for the wiki (and also for the font manual)

Hans

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