> For the complete documentation index, see [llms.txt](https://docs.chamilo.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.chamilo.org/1.11.x/developer-guide/document_templates/structure.md).

# Structure

To allow us to modify the templates, let us understand how they work.

Each template has an entry in the *system\_template* table in the database. Let's look at one existing record:

* id: 1: an automatic ID generated by the database
* title: TemplateTitleCourseTitle: a language variable name for the title to be shown, can be found in main/lang/\[language]/trad4all.inc.php. Can also be a plain title for single-language portals
* comment: TemplateTitleCourseTitleDescription: a language variable for the description
* image: coursetitle.gif: an image to represent the template in the left column. This image is located in app/home/default\_platform\_document/template\_thumb/
* content: ... the HTML content ... (the template itself)