If you like me have to write emails and documents in more than one language you may find that the OS X spelling checker underlines all words that are written in another language than your main language. There is an easy way to overcome this, as Mac OS X can check the spelling of multiple languages simultaneously.

In any application that supports spelling check do the following:

• Select from the top menu Edit->Spelling and Grammar->Show Spelling and Grammar or press [][:] on your keyboard.

• Then just change the selected language in the drop down menu to “multilingual”.