Every now and then MSword decides I must want a particular heading/
styles format (this is the series of Aa Bb Cc icons that take up about
1/3 of my toolbar).

I use multi-level lists extensively and all this auto formatting does
is cause problems with it. I never use the heading/styles function
because it never guesses correctly and I have to spend time formatting
out of it. I would like to turn off the automatic part of it. I
already know I can't turn it off completely or remove it from the
toolbar.