Multilingual spell checking in OS X
The system-wide spell checking facility of Mac OS X allows you to use the spellchecker not only in dedicated text editors, but virtually in any textbox in a user interface. However, if you are writing regularly in different languages, you will find yourself switching between languages frequently.
I was recently asked, whether there is a way for switching between different languages rapidly. Yes, there is! And the solution is much more convenient than you might think! OS X is able to guess the correct language for spell checking if you enable the multilingual dictionary in the settings for the spell checker, as shown in this screenshot
