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# 📄 File Format

Each function of Bookshelf should have a header to indicate the license.

---

Header to put at the beginning of each function:
```
# ------------------------------------------------------------------------------------------------------------
# Copyright (c) <YEAR> Gunivers
#
# This file is part of the Bookshelf project (https://github.com/mcbookshelf/bookshelf).
#
# This source code is subject to the terms of the Mozilla Public License, v. 2.0.
# If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
#
# Conditions:
# - You may use this file in compliance with the MPL v2.0
# - Any modifications must be documented and disclosed under the same license
#
# For more details, refer to the MPL v2.0.
# ------------------------------------------------------------------------------------------------------------
```

If a Bookshelf contributor forgot to put a header at the beginning of a function, the CI/CD pipeline will reject the merge of the contribution in Bookshelf.
To ensure the code meets the minimal requirements, see the [contribution validation page](project:contribution-validation.md).