A question on the scroll action

I’ve never had a need to scroll text to often, thus never bothered with the new scroll function. But I’m needing it more often now, and so I read through the scroll tutorial on this site.\r\rAnyway, in that tutorial is shows to put all the text content in a string. But that means all the text is the same. No bold, italic, colour change or anything. Is there anyway to have certain parts of the text to be bold or whatever?\r\rUntil I figure this one out, I’m still using the old trusty method of text field in a movie clip, and scroll that clip.

enable html for the textfield and use (b) and (font) tags