Enumerations for _Constraint_file.Constraint_type (An open enumeration) 
chemical shift enumeration_text 
chemical shift anisotropy enumeration_text 
coupling constant enumeration_text 
dipolar coupling enumeration_text 
distance enumeration_text 
hydrogen exchange enumeration_text 
intervector projection angle enumeration_text 
line broadening enumeration_text 
nucleic acid base planarity enumeration_text 
nucleic acid dihedral angle enumeration_text 
nucleic acid other kinds of constraints enumeration_text 
other angle enumeration_text 
protein dihedral angle enumeration_text 
protein other kinds of constraints enumeration_text 
protein peptide planarity enumeration_text 
pseudocontact shift enumeration_text