<h1 align="center">Contributing</h1>

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Thanks for contributing! Feedback, fixes and ideas are always useful.

#### Contribution to the Code

- You need to install `l3build` and `ppmcheckpdf` packages into your TeX distribution first.

- After editing the source code, run `l3build check` to compile test files.

- Subsequently, run `ppmcheckpdf check` to compare MD5 checksums for test outputs.

#### Contribution to the Manual

- Contribution to the manual is also appreciated. If you wish to compile the documentation as a result of your modifications, make sure to run the `lualatex` engine.