Turn of "white-space: nowrap;"?

What do you mean with "normal word flow"? Default value for CSS white-space is "normal". However I have committed a change from w-s: pre to w-s: pre-wrap, which will let you wrap text when a <label> is constrained within a size-limited <box>. 

That is the type of thing I was looking for, although the line height is a bit obnoxious for word wraps. I need a paragraph of text explaining a form, so excessive line height makes it less readable. Should this be placed in a new control, or changes be made to <label>?

I changed the default <label>. I would recommend simply making a custom style for label (CSS rule .control.label.style-stylename).

Thanks! I'll be able to check it out in a couple of days.