Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Worth It

This book tries to cover as much about Rexx as possible in one book. It succeeds well considering the challenge.PROS: Thorough coverage of the Rexx language. Lots of coding examples, good tutorial, very comprehensive reference material. Covers some special topics like interfaces, programming style, error-handling techniques, and portability issues. Includes a lot on Windows and Linux. I had fun with the section on how to program my handheld using Rexx -- yah!CONS: Contains two-plus chapters on object Rexx, but some more advanced material would be helpful. Found some typos, but nothing important.CONCLUSION: Just about every Rexx programmer would benefit from having a copy.