id	definition
A	No Quantity or Unit of Measure Change Allowed
X	Equivalent Item Substitution
Y	Alternate Item Substitution Allowed
B0	No Substitution Allowed
B1	Supply any Binding if Edition Ordered Not Available
B2	Supply Paper Binding if Edition Ordered Not Available
B3	Supply Cloth Binding if Edition Ordered Not Available
B4	Supply Library Binding if Edition Ordered Not Available
ZZ	Mutually Defined