The residue-residue pattern of constraints is displayed in a map colored by the number of restraints between that residue pair. You can display this map by selecting the File → Restraint Map menu item from the menu bar of the Constraint Table. Clicking on an item in the map will filter the constraint table to show all constraints involving that pair of residues

Figure 14.11. Distance Constraint Table Controls

If you have the premium version of NMRViewJ with the Crescent molecular viewer active then you will also see the molecule displayed with backbone as a tube, and lines connecting all residues involved in constraints as shown here.

Figure 14.12. Distance Constraint Table Controls