
I have a dummies guide here but can see it mentioning it.
I use Excel all the time and personally think for neatness they should be seperated and then you can straighten the text with the test positioner. I think with Excel one of it's good features is you can use the boxes anyway you like but when printed off it looks like the text numbers etc are all together. My collegue loves Word and hates Excel , I love Excel and hate Word.
Sorry I am not much more help to you and still not answered your question ;-)