Open a modal to allow the user to select a special character.
Imported operation data
The name of the character set to present in the modal for the user to choose a special character from.
A CSS font-family string that will be prepended to the default FDS 'content' font-family to render the Unicode symbols. (The default 'content' font-family is: Merriweather, Georgia, 'Times New Roman', Times, BravuraRegular, BravuraTextRegular, Code2000Regular, Code2001Regular, serif). Note: when the browser renders a character (of a Unicode symbol) it uses the first font in the font-family string that has a glyph for that character. So by prepending a custom font name, that font gets the first chance to provide a glyph and render the character.
This can be used to render certain unicode icons you use commonly in your publications with your own custom (publication) font. This is usually set when using a custom (publication) font for certain/all parts of your document in the editor (via the registerFontStack API and related fontStack CVK option).
Setting the same font-family for both the CVK content and the special characters UI ensures users do not get confused by having the same symbol render differently in different places.