> For the complete documentation index, see [llms.txt](https://university.gonexa.fr/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://university.gonexa.fr/doc/advanced-features/tag-extensions.md).

# Les extensions de balises

Ajoutez des extensions à vos balises pour formater dates et nombres, faire des calculs, gérer les champs Rich Text, les images, l'affichage partiel, les liens et la casse.

Les caractères compris dans la chaine de format Date est interprêtée comme une chaine de format et d'heure personnalisée. Ajoutez un spécificateur standard pour définir l'affichage de l'information souhaitée.

{% hint style="info" %}
**Pré-requis**

* [ ] Avoir installé, paramétré Gonexa Doc et savoir créer un modèle de document
* [ ] Ajouter une balise à l'aide de l'assistant
  {% endhint %}

## Dans cette rubrique

* [Formater les dates et les nombres](/doc/advanced-features/tag-extensions/format-dates-and-numbers.md)
* [Faire des calculs (SUM, COUNT)](/doc/advanced-features/tag-extensions/calculations-sum-count.md)
* [Gérer les champs "Rich Text"](/doc/advanced-features/tag-extensions/rich-text-fields.md)
* [Afficher des images dynamiques](/doc/advanced-features/tag-extensions/dynamic-images.md)
* [Afficher partiellement un champ texte](/doc/advanced-features/tag-extensions/truncate-text-field.md)
* [Insérer une URL cliquable dans un texte](/doc/advanced-features/tag-extensions/clickable-url-in-text.md)
* [Mettre un texte en majuscules ou minuscules](/doc/advanced-features/tag-extensions/uppercase-lowercase-text.md)


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://university.gonexa.fr/doc/advanced-features/tag-extensions.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.