There is one thing that I've been trying to remove and haven't found the button yet.

When I'm writing a date, the program automatically adds an abbreviated version when I press return.

I want to write: le 12 juillet 2006

When I press return to go to another line the computer modifies it to: le 12 juillet 2006-07-12

I've looked in the automatic corrections and automatic text inserts, but can't find the place to modify this command. It is a tad annoying.

That is the single most annoying thing in MS Word. I have to remember to type a space after any date so that it doesn't happen, but half the time I forget.