I have a large text box which holds quite a bit of text. Ideally the text it
contains would be formatted into columns. Is this possible? I've tried just
manually making columns in the box by inserting spaces after the end of a
line and then typing more text, doing this for each line, but A) this is
horribly awkward to edit, and B) it looks crappy.

I've also tried grouping narrower text boxes together, creating the effect
of columns. This actually isn't so bad, but you have to ungroup them to
edit, and since text doesn't flow from one to the other, it's kind of limited
and again awkward to work with.

Is there a better way to do what I need to do?