Regarding Basile's last message, here is a screen shot of the upper left corner of your document. 

The highlighted "Tmdoc" is the Document Style that sets the overall style of the document and is designed for TeXmacs documentation. The red underlined "doc" is a  Style Package. These are used to make modifications to the current document style. Clicking on the "+" sign gives a drop down to select a style package.  I am not sure, but having the "doc" style package added to the "Tmdoc" document style may be redundant. I know if you have the "Generic" document style and the "doc" style package still works. This means if you are not writing TeXmacs documentation this time, you should be able to select whatever document style you want and add the "doc" style package for keystrokes. If you are writing TeXmacs documentation, then selected just the "Tmdoc" documentation by itself may be all you need.

P.S. I am not sure if the document style can effect the visual presentation of the \key macro in the "doc" style package. I don't think so but you might want to watch out for that.

On Fri, Sep 8, 2017 at 11:19 AM, Basile Audoly <address@hidden> wrote:

Hi Vincent,

Your other document is of 'tmdoc' type, the command \key is defined in the tmdoc style file.

Move the cursor to the top-left position, and the change document type from Article to Documentation > Texmacs > tmdoc using the left-most drop-down menu.

Basile

Le 8 sept. 2017 à 09:11, Vincent Douce Mathoscope <address@hidden> a écrit :

i understand Basile

but i dont know how to read the preamble of a document

can i show you the document directly ?

here is it :

<cookbook.tm>

Vincent

Le 8 sept. 2017 à 18:07, Basile Audoly <address@hidden> a écrit :

The question is where has \key been defined in the other document.

Is there a custom definition for \key in the preamble of the other documents?

Are both documents of the same type?

Basile.

Le 7 sept. 2017 à 21:48, Vincent Douce Mathoscope <address@hidden> a écrit :

hi

we have a document (the old 2012 cookbook that we are working on) where we often use the tag \key and it works well

we have an other document where \key seems not to be recognized

this one :

<nuages_copie.tm>

we dont understand why \key does not work on this document...

any idea ?

––––––––––––––––––––––––––
Vincent Douce

http://mathoscope.xyz

06~13~11~07~26

Bagnères de Bigorre 65200

––––––––––––––––––––––––––
Vincent Douce

Mathoscope, éveilleur de mathématiques
http://mathoscope.xyz

06~13~11~07~26

Bagnères de Bigorre 65200