Ascii character in compact tag

1. What is the problem? Be very detailed.
I use the compact tag to générate a .txt file which could be print when necessary
My issue is that I can't manage how to make a carrier return on this file output

2. What app or server are you using and on what device and operating system? Include version numbers.
ODK 1.21 et xlsform

3. What you have you tried to fix the problem?
il try to concatenate in my calculate colum with Ctrl+Enter or Alt + Entrer (I use Xlsform) but this character is replaced by a space.

I wonder if there is a way of getting ascii caractère as a chr(13) I 'm used to use in others language

*4. What steps can we take to reproduce the problem?

5. Anything else we should know or have? If you have a test form or screenshots or logs, attach below.

I'm not sure I understand your question. If would help, write your question in French.

Please also attach a small sample form that has the problem.

Bonjour Je cherche à insérer le caractère retour à la ligne dans une chaîne de caractère
En effet en utilisant compact tag je veux générer un retour à la ligne dans le fichier txt qui est produit