IMS uses XML-Schemas as the primary control documents for the IMS specifications' XML bindings. Note that Service specifications (ie. Enterprise Services) wsdl and schema files are located under Services. Data Model only specifications schemas are located under Schemas.
Accessibility
AccessForAll v2.0
IMS Learner Information Package Accessibility for LIP
Basic Learning Tools Interoperability
Learning Object Discovery and Exchange
Reusable Definition of Competency or Educational Objectives Final Specification
Vocabulary Definition Exchange
Local