scourge: Yes, double line breaks. lol I tried the program a bit more with larger files. It didn't work when I had doubleclicked the icon to start it. The program window didn't disappear but the console said "out of memory" (and a lot more..). It did work when I started it in the Terminal with the command line "java -Xms32m etc etc...". The largest file I tried was almost 13 MB. A funny thing was that the double line breaks disappeared also. java -version gives java version "1.4.2_05" Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_05-141) Java HotSpot(TM) Client VM (build 1.4.2-38, mixed mode) In case you don't know: The console is a separate program for messages about system errors. Now I'll go and have a look at your link ...