Hi, I've recently finished three papers on Java-based detector reconstruction and analysis that I presented at last year's Linear Collider workshop in Sitges, Spain. You can find them as http://www.lbl.gov/~ronan/papers/Sitges99/JAS_hep.lcd.ps also available as SLAC-Pub-8301 http://www.lbl.gov/~ronan/papers/Sitges99/LCD_Tracking.ps SLAC-Pub-8389 http://www.lbl.gov/~ronan/papers/Sitges99/W_Reconstruction.ps SLAC-Pub-8390 The first one mentions some things about Java and Tony Johnson's Java Analysis Studio, and describes in some detail the Linear Collider Detector (LCD) reconstruction and analysis system. The second one outlines the current state of the track reconstruction software and documents the Java software OO design. The last one is our first attempt at full event reconstruction and jet-jet mass determinations. It stops short of detailed comparison of Large versus Small detector designs but gives the setting for making such comparisons. It also completes the documentation of this past year's LCD software effort. I have the following items on my to-do list 1.) Update Tracking tutorial 2.) Move Jet finding and W analysis code to the LCD contributions directories. 3.) Integrate some CheaterClusterFinder modifications and Event Display plugin improvements into standard LCD packages. Please let me know if you any questions. Mike Ronan P.S. My write-up of the Tracking code does not include Nick's fitting or combined pattern recognition. I plan to start using his improvements for future work.