Hello,
** Wolfgang Schuster [2018-08-23 20:58:01 +0200]:

> You get an error message because outlinetext doesn’t work.
> 
> \starttext
> 
> \startMPcode
>     draw outlinetext.f
>         ("A")
>         () ;
> \stopMPcode
> 
> \stoptext

The example that Fabrice Couvreur presented works fine on my side,
besides

> Fabrice Couvreur schrieb am 22.08.18 um 13:05:
>> Hello,
>> Sorry to insist, but could anyone help me understand the problem I'm
>> having in using Emacs with standalone context ?
>> The following file compiles perfectly from a terminal :

----------------------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

[...]

---
WBR, Vladimir Lomov

-- 
No snowflake in an avalanche ever feels responsible.