PDF integrability
=================

These pseudo-observables can be used to enforce the integrability of PDFs in a PDF fit
- see e.g. :cite:`NNPDF:2021njg`.
This is a built-in interface.

Pinecard structure
------------------

- The ``integrability.yaml`` file (compulsory). This file contains the |pid| and kinematics of the pseudo-observable.

Additional metadata
-------------------

No additional metadata is written.

Output
------

No additional output files are created.