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In the GUI Designer at the Table Contents dialogue "Bound" ist translated with "Grenze" which means "Border". The correct translation would be something like "Gebunden".
No contributor now. Currently oracle translates and maintains only ja, zh_CN, pt_BR and ru for entire IDE and es, it, de and fr just for NetBeans platform. If someone wants to translate and update other parts and languages, please let us know. Translation files are located at http://hg.netbeans.org/releases/l10n