Word 2013 (Office 365) has actions assigned to some key combinations that are needed to type normal characters for example on Swiss, German and Canadian French keyboard layouts.
The most annoying ones are these (my layout is Swiss German, but German forums are full of complaints about the opening square bracket not working in Word, too):
Swiss-German German Canadian French
Ctrl+Alt+7 | { |
Ctrl+Alt+8 ¢ [ 2 (superscript)
Ctrl+Alt+[ [ [
Ctrl+Alt+] ] ~ ]
It is possible to use Alt Gr (right ctrl) to access these characters, but in my 10-finger typing system I use my left hand to press the Ctrl and Alt keys and my right hand to press the 7/8/[/] keys. I challenge you to press Alt Gr and 7 with only your right hand and without taking your eyes from the screen ;-)