In addition to simply linking atoms with a spring , you can determine NMR structures using the same functions as XPLOR to restrain distances and dihedral angles individually or all together via a restraint file . The violation energies and statistics can be obtained using various potential functions and parameters like distance averaging . The restraints can be listed , selectively shown (satisfied restraints in green, violated ones in red), styled, hidden or deleted. Floating assignments can also be analyzed.