Yes
In the defaults file, there is a setting for the characters used for section views. Add the bold code <B> as a prefix and <b> as a suffix to turn bolding off. You can also set character size, we used 1-1/2 times the height for the section letters. Underline can be set, also.
"Wildfires are dangerous, hard to control, and economically catastrophic."
Ben Loosli