On web dialog components, the text box control has a property called 'cell in-line style', however, this is not exposed for label controls. I've found that I can change the control from label to text box and set this property, then change it back to label and the property is still in effect. However, the property is not exposed on the label control property sheet.

Screen1 is the text box property sheet, and screen3 is the label property sheet.

I use the cell in-line style to emphasize a critical piece of information as shown in screen2.