Data type: char
Must appear in a looped list containing '_geom_angle_atom_site_label_'
no 'do not include angle in special list'
n 'abbreviation for "no"'
yes 'do include angle in special list'
y 'abbreviation for "yes"'
Enumeration default: no
This code signals if the angle is referred to in a publication or should be placed in a table of significant angles.