Is there a way to create a new (custom) Underline style that would appear in the Font Formatting box along with the standard set of underlines, double underlines, dashed underlines, etc.? Or to edit one of the current styles more to my liking? I would like to create one that has a marker on each end, such as an open circle. I would like to apply this underline as part of a heading style, ultimately, and use it frequently; therefore I would not like to create a drawing object for this purpose.