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In 6.1 I cannot find the undo key binding which was located under Tools->keymap->edit in 6.01. (is it missing or is it relocated?) From my about dialog: Product Version: NetBeans IDE 6.1 (Build 200804211638) Java: 1.6.0_03; Java HotSpot(TM) Client VM 1.6.0_03-b05 System: Linux version 2.6.24.5-85.fc8 running on i386; UTF-8; en_US (nb) Userdir: /home/hgroven/.netbeans/6.1
Also raised at nbusers forum: http://www.nabble.com/BrainFart-or-Something-has-changed.-td17180620.html
this is known bug - see issue 131710. Thanks for your report anyway *** This issue has been marked as a duplicate of 131710 ***