The notes in http://www.macruby.org/trac/wiki/MacRubyDifferences, even if completed, would not serve as a "HowTo" for porting an app from RubyCocoa to MacRuby. If folks here will give me a hand, I'd be happy to put together such a document. On a related topic, I'm wondering about the possibility of porting conventional (ie, ObjC) Cocoa apps _incrementally_ to MacRuby. Is there a way, for example, to: - Turn an ObjC Cocoa app into a nominal MacRuby app, but leave all of the actual code on ObjC. - Pick a class and method, comment out the ObjC code, and add a MacRuby version that performs the same job. - See if things still work the same. - Rinse, repeat... -r -- http://www.cfcl.com/rdm Rich Morin http://www.cfcl.com/rdm/resume rdm@cfcl.com http://www.cfcl.com/rdm/weblog +1 650-873-7841 Technical editing and writing, programming, and web development