The citizens of Neuchâtel debate religion

The Neuchâtel parliament has approved the law on the recognition of religious communities, which would allow certain groups to benefit from state recognition. But the PLR and the UDC are going to the front and have both just announced that they will fight the text with a referendum. What does the law on which the people of Neuchâtel will have to decide say? What is its legal basis? What rights and duties does it imply?