>> I would like the features that are possible by that, like >> * error highlighting as I type >> * code completion >> * looking up declarations >> * finding /all/ places where a method is called >> * refactoring (at least renaming) >> > > A tiled window/widget layout designer? Wasn't there something like this around at some point? There is also the open source BeMDI library if anyone is intrested: https://github.com/HaikuArchives/BeMDI Sreenshot: http://www.haikuware.com/components/com_remository_files/file_image_39/img_39_02.jpg