In Activity Log Viewer give the option to filter the output, e. g. for [error], [debug], [notice], ... Or maybe even better to provide a text field where you can enter a regex which a line must match against to be shown. Sorry if this is a dupe, but I have many bugs to post and am too lazy to check them all for dupes currently. :-) OS: Windows XP Java Version: Sun Java 1.5.0_09-b03 jEdit Version: 4.3pre8