# Re: [NTG-context] letters in context mkiv

```Thanks Wolfgang and Thomas,

The solutions of both of you function!```
```
Thank you!

Robert

> Op 1 aug. 2017, om 13:17 heeft Schmitz Thomas A. <thomas.schm...@uni-bonn.de>
> het volgende geschreven:
>
>
>> On 1. Aug 2017, at 12:15, r.erm...@hccnet.nl wrote:
>>
>> While understanding what it means, I guess this might imply that it is
>> difficult (?) or impossible (?) to correctly process files such as the knuth
>> text and for that matter any other letter text that contains regular Context
>> commands.
>>
>> Nevertheless, for the moment this problem remains unsolved.
>>
>> What would you advise as the next step?
>>
>> Should the letter be somehow set-up outside xml setups rather than inside?
>> Should the letter texts (and a specific knuth sample text) be reformatted as
>> xml?
>
> So: you want to import the letter texts from an external file. Easiest
> solution: instead of simply \input knuth, try this:
>
> {\pushcatcodetable
> \catcodetable\ctxcatcodes\input knuth
> \popcatcodetable}
>
> As you can see, changing the catcode regime processes the file correctly.
> “Expansion” means something different in TeX speak.
>
> Other possibilities: write your letter body in xml, or write the letters in
> buffers and use \processTEXbuffer.
>
> Thomas
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