Hi Binoy and Doug: it works quite far. Did you run all regression tests? The first I tried did not complete. Please can you check. -- Karl /proj/adaptive/www/sources/DemeterJava/examples/j-c-holding (cd ./gen; jack program.jack) Jack Version 0.5. Copyright (c) 1996 Sun Microsystems Inc. (type "jack" with no arguments for help) Reading from file program.jack . . . Parse error at line 315, column 6. Encountered: ":" Was expecting one of: "[" ... ... Detected 1 errors and 0 warnings. make: *** [gen/Parser.java] Error 1