JRun Version 3.1: Documentation Changes
JRun Version 3.1 features revised documentation, including a new manual: the JRun Version 3.1 Features and Migration Guide. The other manuals apply to JRun 3.0, however, as they were not reprinted for the JRun 3.1 package. This article tells you about updates to the JRun documentation set, different delivery mechanisms, and packaging for JRun version 3.1:
JRun Version 3.1: Documentation Changes