contagion vector: infoset augmentation

Whether default values for attributes or data types, applying these 
annotations through schemas (or DTDs) that also define structure or 
content constraints is a recipe for making schemas the primary tool in 
developing vocabularies.  These conveniences drive schema use earlier in 
the development process, even when constraints themselves are not needed.

These annotations have since been integrated into other toolkits, 
further driving the use of schemas to activate features.

Some schema approaches avoided this; to my shame, the old XSchema was 
not one of them. [Y]

-- 
Simon St.Laurent
http://simonstl.com/

[X] - http://www.w3.org/TR/xml-infoset/
[Y] - http://www.w3.org/TR/NOTE-ddml#attdefaults