<section begin=features/>
*  Addition of the [http://www.nmr-relax.com/manual/frame_order_ref_domain.html frame_order.ref_domain user function] to specify the alignment of different domains.
*  Converted the reduced J(wω) mapping sample script to the relax 1.3 design to make it functional.
*  Created the 'rigid' frame order model.
*  Made the profile module optional, removing the dependency on the Python development packages.