Active Messaging includes the following documentation:
Installation and Release Bulletin for Adaptive Server Enterprise Active Messaging Option version 15.0.3 (this document)
Adaptive Server Enterprise Active Messaging Users Guide
In addition, the Sybase Technical Library CD includes all the necessary documentation for the products that are included with Active Messaging, such as EAServer. A list of related and referenced documentation is also available in the preface of the Adaptive Server Enterprise Active Messaging Users Guide. Go to the Product Manuals for the most recent versions.