Optional Entries

Apart from the required font entries, the font configuration file may list any number of additional fonts. When Equation Composer/Document Composer encounters a character without a style indicating an explicit font face, it will first try to locate the character in one of the required fonts. Failing that, it will proceed through the list of optional font entries in the order in which they occur, trying to locate a font containing the character. The first font that contains the character will be used. If no font is located containing the character, Equation Composer/Document Composer will render a red question mark in place of the character.

When Equation Composer/Document Composer requires a character that is explicitly styled with a particular font face, it will consult the listed fonts, and if that font face is present, it will check if the font contains the character, and if it does, it will be used. Otherwise, the font face request will be ignored and the procedure used for unstyled characters will be employed, as described in the preceding paragraph.